String theorys rival: alive & well, YouTubers wrong again. #physics #universe Phil Halper (aka Skydivephil) 2024-10-21 | String theorys rival: alive & well, YouTubers wrong again. #physics #universe
Primordial black holes, dark matter and Apollo era technology Phil Halper (aka Skydivephil) 2024-06-12 | Is dark matter primordial black holes? If so, could we find them using Apollo-era technology on the moon?A new paper suggests the answer may be yes to both. I interviewed David Kaiser, one of the paper's co-authors, former student of inflationary cosmology pioneer Alan Guth, and now Professor of Physics and Professor of the History of Science at MIT. For the preprint of the full paper:arxiv.org/pdf/2310.16877and other press about the paper lrb.co.uk/the-paper/v46/n11/david-kaiser/black-hole-flybyhttps://news.mit.edu/2024/exotic-black-holes-could-be-dark-matter-byproduct-0606And some other related papers:journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.231402 arxiv.org/abs/2303.02168arxiv.org/abs/2312.17217a timeline is below 00:00 introduction 00:57 primordial black holes 3:05 particle dark matter and modified gravity 6:33 LIGO and EHT11:03 window of opportunity 15:16 observaitonal signatures 20:30 Apollo era tech 25:19 Star Wars 25:54 the future
Replying to the New Kalam with Joe Schmid, the Sci Phi Show Phil Halper (aka Skydivephil) 2024-06-07 | We've debunked the old Kalam argument presented by William Lane Craig in other videos, see here:youtube.com/watch?v=pGKe6YzHiMEyoutube.com/watch?v=femxJFszbo8&t=1411sBut there is now a "new" Kalam based on Benardete paradoxes such as the Grim Reaper which are meant to establish something called causal finitism. What are these paradoxes ? and how can a critic of the Kalam respond?Well our very own Alex Malpass has teamed up with Joe Schmid of the Majesty of Reason and published a paper in one of the worlds leading philosophy journals Mind. You can find that herephilarchive.org/rec/SCHBPCWe talk about this paper and related issue and see why how to reply to this new Kalam. A timeline is here:00:00 introduction 2:40 Grim Reaper paradox 7:43 The Kalam argument 9:25 Causal Finitism 12:40 The UPD23:05 The Problem with causal finitism 37:20 Physics 44:30 Mysterious Force 57:33 The Patchwork Principle Joe's papers on this topic:“Branching Actualism and Cosmological Arguments”, Philosophical Studies (2023, with Alex Malpass). Here we use branching actualism to criticize the use of patchwork principles in support of the Grim Reaper Kalam.philpapers.org/rec/SCHBAA-22“Benardete paradoxes, patchwork principles, and the infinite past”, Synthese (2024). Here I develop another problem for the use of patchwork principles in support of the Grim Reaper Kalam.philarchive.org/rec/SCHBPP-3#:~:text=Benardete%20paradoxes%20involve%20a%20beginningless,impossibility%20of%20an%20infinite%20past.“The End is Near: Grim Reapers and Endless Futures”, Mind (Forthcoming). Here I criticize the Grim Reaper Kalam by developing a symmetrical Kalam-style parody argument, based on a future-oriented Benardete paradox, for the impossibility of an endless future.academic.oup.com/mind/advance-article-abstract/doi/10.1093/mind/fzad065/7492631?redirectedFrom=fulltext“Grim Reaper Paradoxes and Patchwork Principles: Severing the Case for Finitism”, Journal of Philosophy (Forthcoming, with Troy Dana). Here we develop two problems for the Grim Reaper Kalam. One is a companions in guilt argument based on a new finite Benardete-like paradox. Another relates to a mistaken assumption about the intrinsicality of the Reapers’ realized powers/dispositions.philarchive.org/rec/SCHGRP-4“Benardete Paradoxes, Causal Finitism, and the Unsatisfiable Pair Diagnosis”, Mind (Forthcoming, with Alex Malpass). Here we argue that the unsatisfiable pair diagnosis is the best solution to Benardete paradoxes, and in particular that it is much better than causal finitism. We also raise yet another challenge to the use of patchwork principles on behalf of the Grim Reaper Kalam.philarchive.org/rec/SCHBPC
Evidence for a Multiverse in the CMB? Phil Halper (aka Skydivephil) 2024-05-30 | The European Space Agency launched Planck into deep space to make the most accurate ever maps of the CMB, the oldest light in the universe. George Efstathiou, was the Cambridge scientist chosen to present its results. We interviewed him and he claimed it found evidence of the multiverse!
10 tips to see the Northern lights, an Aurora chasers guide #auroraborealis #northernlights Phil Halper (aka Skydivephil) 2024-05-28 | Make sure you never miss a major display of the Aurora Borealis with Northern Lights photographer Phil Halper. Ive had my space-weather images displayed at the Astro Photographer of the Year Exhibition in London, the Washington Post, BBC and many other outlets. Here are my tips for understanding the space weather forecast so you don't miss the next big Northern Lights display.Useful links :spaceweather.comsolarham.comgoogle.com/search?client=safari&rls=en&q=sapcxeweather+live&ie=UTF-8&oe=UTF-8aurora-alerts.uk
Atheists debunk confused Christian apologist Frank Turek #atheist #atheism Phil Halper (aka Skydivephil) 2024-05-24 | Christian apologist Frank Turek says he doesn't have enough faith to be an atheist, but he really doesn't have enough knowledge. In this video, leading atheist thinkers Alex Malpass and Dan Linford join host Phil Halper to expose Turek's never-ending errors, especially concerning infinity and cosmology. How many mistakes can a Christian apologist make in 8 minutes? Place your bets. Timeline:00:00 Introduction 2:37 infinity 10:12 The SURGE argument and the 2nd law 22:39 expanding universe 28:41 radiation42:08 Galaxy seeds 49:51 Einstein1:02:43 Creation ex nihilo
Whats inside a black hole? Fuzzballs, Echoes & The Big Bang #black hole #science #space Phil Halper (aka Skydivephil) 2024-05-17 | What's inside a black hole? Physicists have been struggling with this question for decades, but recent work in theoretical physics has revealed an exciting new idea. That a black hole should be replaced with a fuzzball. In this film, we talk to the father of Fuzzballs, Samir Mathur, and his close colleague Nick Warner, a former student of Stephen Hawking, who explain how fuzzballs can solve Hawking's greatest mystery, the information paradox. We also talk to astrophysicist Niayesh Afshordi, the father of black hole echoes, who'll reveal how they might enable us to peer inside a black hole and tell if string theory's fuzzballs are really lurikng inside.And if the black hole singularity is resolved, what about the Big Bang ? Might that be gone in the new framework as well?Tmeline:00:00 Intrdocution00:48 I was a Hawking's student 1:49 The information paradox 4:42 string theory 7:16 solving the information paradox10:36 Fuzzballs 12:39 tunneling into a black hole 14:50 Looking inside a black hole 15:49 Echoes 20"07 Blakc hole Imaging 21:07 VECRO energy 22:35 cosmology and inflation 24:41 The Big Bang 26:3 Black Hole Gas
I was Stephen Hawkings student #physics #science #space #cosmology Phil Halper (aka Skydivephil) 2024-05-16 | Before Stephen Hawking got his voice synthesiser , he had tone translated by one of his students into recognisable English. Nick Warner was one of those students who had that task. Here he recounts what is was like.
Northern lights, real time video, beautiful colours #aurora #northernlights #auroraborealis Phil Halper (aka Skydivephil) 2024-05-11 | Incredible real time video with beautiful colours of May11th northern light which saw some of the strongest Aurora Borealis in years .
Northern lights, incredible colours, real time video Phil Halper (aka Skydivephil) 2024-05-11 | On May 10th, an incredible geomagnetic storm led to fierce northern lights over England, and I filmed in real-time video. The colours seen in the Aurora Borealis were out of this world.
Life on Mars? Scientists reveal new evidence for habitability Phil Halper (aka Skydivephil) 2024-05-10 | I speak to lead authors on a new paper describing exciting possibilities for ancient life on Mars. The authors, Patrick Gasd and Nina Lanza used the ChemCam instrument on NASA's Curiosity Rover and found elevated levels of manganese. What does this mean? COuld it be a sing of alien life , what does it say about anient conditions on Mars? Were they Earth like? Lets find out
Astronomers claim cosmic glitch in the universe #physics #science #astronomy #cosmology Phil Halper (aka Skydivephil) 2024-05-04 | A short excerpt from our longer interview with NBiayesh Afshordi one of the astronomers claiming to have found a comic glitch in the universe.
Astronomers claim universe has cosmic glitch Phil Halper (aka Skydivephil) 2024-05-03 | #cosmology #physics #BigBang Science news outlets around the world have reported a possible "cosmic glitch" in the universe. We chatted with one of the authors of the paper that made this claim.Niayesh Afshordi and I discuss what motivates it, how it was tested, and how it might be further tested in the future. Most importantly, what impact it might have on the very origin of the universe. Might we have to rethink cosmology and consider what was before the Big Bang?00:00 Introduction2:23 motivation 5:32 Hubble tension9:15 Return of the ether 12:00 Quantum gravity 13:25 observations 15:40 S8 tension 18:00 Big Bang20:00 future tests
The Sci-Phi Show: Hourglass Universe vs The Kalam Argument Phil Halper (aka Skydivephil) 2024-04-30 | Many contemporary models of the Big Bang from The Hartle Hawking model to Loop Quantum Cosmology to String Gas Comsology, the Janus Universe, Carroll Chen, Aguirre-Gratton, and CPT symmetric universe, can be interpreted as giving the universe an hourglass-like structure. In this episode of the SciPhi Show, leading atheist philosophers Alex Malpass and Dan Linford examine what this might mean for the Kalam Cosmological Argument. In particular, we show that it faces an "interface dilemma" where defenders of the argument, like William Lane Craig, must give up one of the Kalam's fundamental premises. For my videos on the early unvierse, see here:youtube.com/watch?v=Ry_pILPr7B8&list=PLJ4zAUPI-qqqj2D8eSk7yoa4hnojoCR4mFor the Kalam, see here:youtube.com/watch?v=pGKe6YzHiME&t=2798sand here youtube.com/watch?v=femxJFszbo8&t=761sFor Dan's paper, see here:arxiv.org/abs/2006.08890a timecode is below 0:00 Introduction 1:21 What is the Kalam?3:11 Hourglass Universe 6:05 The Interface Dilema 14:55 The Metaculus16:55 Causality 22:30 Simultaneous Causation 25:50 Theories of Time 44:07 Challenging the Causal Principle
Does the universe need a cause? #atheism #athiest #philosophy Phil Halper (aka Skydivephil) 2024-04-30 | Atheist philosopher Alex Malpass replies to the worry that causality might not apply to the universe.
Roger Penrose: theres something wrong with quantum mechanics #science #physics #quantum Phil Halper (aka Skydivephil) 2024-04-25 | Roger Penrose offers a controversial opinion that his fellow physicists have quantum mechanics wrong.
Why Jesus Gets the Golden Rule Wrong #athiesm #athiest #philosophy Phil Halper (aka Skydivephil) 2024-04-20 | Philosopher Alex Malpas's explain whats wrong with The Golden Rule proposed by Jesus . Part of our longer discussion in the SciPhi Show Episode 2 youtube.com/watch?v=lSAaXE4_Prk
The SciPhi Show2: Atheists debunk the Moral Argument for God Phil Halper (aka Skydivephil) 2024-04-16 | A new panel show featuring two of my favorite atheist thinkers, Alex Malpass and Dan Linford. In this second episode, we examine William Lane Craig's deductive version of the moral argument for God, why it fails, and how we can flip it and possibly disprove God. We note how prominent thinkers such as Richard Dawkins, Michael Ruse, and Peter van Inawagen are misquoted to support the moral argument and how it ignores thousands of years of discussion in philosophy. Koons paper is here: https://faculty.georgetown.edu/koonsj/papers/Euthyphro.pdfA timeline is below:0:00 preview0:16 introduction 1:31 The moral argument against God 6:48 PhilPapers survey 11:05 moral compass22:39 misquoting Dawkins 23:35 Jesus gets it wrong 33:49 Euthyro dilemma 41:33 Animals52:23 misquoting Michael Ruse 54:09 moral theories 1:01:40 Neither objective nor subjective ?1:03:53 Swiburn'es criqitue of the moral argument 1:12:48 misquoting Van Inwagen
DESI: New Dark energy survey results can change physics Phil Halper (aka Skydivephil) 2024-04-09 | DESI, the Dark Energy Spectroscopic Instrument, has just released its first results, and they are not entirely consistent with standard cosmology. In particular, we've been told for decades that the universe's fate is a heat death, with the universe expanding forever into the future. But this assumes that dark energy is constant over time. The new DESI results challenge that. It seems dark energy might weaken over time, maybe even allowing the universe to be cyclic. We unpack what this all means with Kyle Dawson, DESI's co-spokesperson. Timeline:0:00 Introduction 0:59 Dark energy 1:57 The DESI instrument 3:47 New results 8:36 I wasn't expecting that 11:26 The Hubble tension 14:16 the fate of the universe 16:08 The future is coming soon
Atheists show the real meaning of the bible Phil Halper (aka Skydivephil) 2024-03-27 | a short clip from our longer discussion with two of the worlds leading atheist thinkers
The Sci Phi Show1: Fine Tuning & Genocide, a reply to Craig Phil Halper (aka Skydivephil) 2024-03-27 | A new panel show featuring two of my favorite atheist thinkers, Alex Malpass and Dan Linford. We aim to discuss science and philosophy and how they intersect in the philosophy of religion.In this, our first episode, we reply to comments made by William Lane Craig on Alex or Connor's show Within Reason. Particularly his claims regarding Richard Dawkins, fine-tuning, the Caannatie genocide, and divine command theory. A timeline is below:0:00 preview0:15 introduction 2:32 Fine-tuning 16:21 Problem of evil 27:24 The Canaanites 38:25 Was it genocide? 51:50 Divine Command Theory
Do Fish Feel Pain? Striking new evidence says yes Phil Halper (aka Skydivephil) 2024-03-22 | Some of the leading scientists in the field explain how they showed that fish feel pain. From the discovery of pain receptors in the early 21st century to finding a rare brain damaged patient that enables us to the dissolve the last objection of fish pain skeptics.Starring Lynne Sneddon, Mathew Parker, Phil Halper, Ken Williford, David Rudrauf, Perry Fuchs A timeline is here:0:00 Introduction 0:43 Nociceptors 1:49 analgesic seeking 4:24 anxiety 4:57 neophobia 5:49 fear contagion 6:47 fish memories 7:30 fish brain FMRI 8:09 A gene for pain 8:43 fish personalities 9:44 self awareness test 11:07 replying to skeptics 11:57 Proving Self awareness without a cortex 14:10 a rare brain damaged patient 17:36 where is pain in the brain? 19:51 leucotomy21:13 Affective Neuroscience22:48 convergent evolution 23:41 pain is ancient 24:26 conclusion
Hawking on the multiverse Phil Halper (aka Skydivephil) 2024-03-15 | In one of the last interviews he gave, Hawking explained why our universe is one of an infinite number of pocket universes in a vast multiverse.
Astronomy Debate: Dark Matter or Modified Gravity? Phil Halper (aka Skydivephil) 2024-01-06 | Two of the world's leading cosmologists debate whether anomalous measurements in astronomy, like the rotation and motions of galaxies, imply we need to involve an invisible substance known as dark matter or a modification of our fundamental laws pf physics. With :Simon White, Emeritus Director at the Max-Planck Institute for Astrophysics and Stacy McGaugh, Professor of Astronomy, Case Western Reserve UniversityFor our other hosted debates see here: youtube.com/watch?v=AUyylR5RPZw&list=PLJ4zAUPI-qqoZl9JuEiLHjVDLkQQ6Y4KBfor Stacy's blog, see here:tritonstation.comA timeline of the film is below. 0:00 Introduction 1:56 Simon's story 4:03 Stacy's story6:30 Evidence for dark matter 21:09 Stacy case for MOND30:40 "I agree with Stacy"41:12 The Lampost effect 52:00 dark matter sub halos1:00:35 missing satellites 1:14:00 bullet cluster 1:22:40 CMB1:30:00 Are both theories right?1:41:04 wide binaries and Gaia 1:45:30 other problems for LCDM 1:50:42 Sociology of science1:57:15 Looking to the future
Has the Big Bounce been ruled out? Phil Halper (aka Skydivephil) 2023-12-15 | Earlier this year, Scientific American published an article with the headline "The Universe Began with a Bang, Not a Bounce," claiming that a new analysis of the European Space Agency's Planck Satellite speaks powerfully against the Big Bounce model from Loop Quantum Cosmology (LQC). LQC is a cosmological model inspired by the mother theory of Loop Quantum Gravity ( a rival to string theory). However, one of the researchers mentioned in the article, Ivan Agullo, argues the story is totally misconceived, and the evidence is consistent with a Bounce. In this film, he explains why. For more on LQC see here:youtube.com/watch?v=x9jYH5VIF9E&t=1740sand hereyoutube.com/watch?v=MgwJmWXoWWI&t=66sFor our Before the Big Bang series:youtube.com/watch?v=Ry_pILPr7B8&list=PLJ4zAUPI-qqqj2D8eSk7yoa4hnojoCR4mA timeline of the film is below. 0:00 Introduction 1:15 Ivan vs Scientific American 5:04 LQC and the Big Bounce7:53 Seeing the Bounce in the CMB11:06 CMB anomalies 12:03 Are the Bang and the Bounce compatible?17:09 What were they looking for?19:44 No Signal, what does it mean? 23:20 Oscillations 24:12 CMB anomalies and the bounce 27:02 Final Thoughts
Atheisms Best Argument? #atheist #atheism #evolution Phil Halper (aka Skydivephil) 2023-10-08 | From a new film about the problem of animal suffering and the neuroscience of pain. This accompanies a new paper on the subject in the academic literature and features the authors and Alex O'Connor (formerly cosmic skeptic), Peter Singer, Joe Schmid (Majesty Of Reaosn ), and other leading philosophers and scientists. The film can be found. here: youtube.com/watch?v=aM3y7AviNU8&t=1224sFor my YouTube channel youtube.com @skydivephil and Twitter twitter.com/skydivephil
Atheisms Best Argument? The Problem of Animal Suffering & The Neuroscience of Pain Phil Halper (aka Skydivephil) 2023-09-29 | The problem of animal suffering (a version of the problem of evil) has recently been described as the biggest problem for Christianity. However, a new paper in the International Journal for Philosophy of Religion suggests that the problem is far worse than imagined. Here, we explain why and counter attempts by theists to reply. The film has 3 sections:Section 1 We meet the authors of this paper and others who explain the EPAS (The Expanded Problem of Animal Suffering). Sections 2 We review various theistic replies to animal suffering and show how atheists, agnostics and other religious skeptics reply.Section 3 We discuss claims made by leading Christian thinkers like CS Lewis, Michael Murray, Richard Swinburne, and William Lane Craig that neuroscience implies we should downplay animal suffering. This is something we tackled many years ago, but since then, a rare patient who had key cortical regions knocked out enables us to do a direct experimental test of the claims of these theologians. Namely testing his pain perception. The results were published in a paper in Philosophical Psychology, and the authors of that paper are in this video explaining why these findings are devastating for the one explanation that might undermine the Expanded Problem of Animal Suffering. This film stars the authors of both of these papers, including lead author Phil Halper (aka skydivephil), philosopher of consciousness Ken Williford, neuroscientist David Rudrauf, pain expert Perry Fuchs, as well ethicists Peter Singer and Mark Bernstein, and philosopher Joe Schmid and Within Reason host Alex O'Connor (the artist formerly known as cosmic skeptic). A timeline of the film is below. 0:00 Introduction 1:16 The problem of time 1:55 The problem of creation 3:00 The problem of divine commands4:15 The problem of divine actions 7:53 The problem of the Anthropocene8:42 Answering theists' replies introduction8:48 Nomic regularity 11:33 Soul making 14:02 Justified genocide? 16:23 After-life compensation 18:29 A Pre-Adamic Fall 20:39 Skeptical Theism 25:32 Other arguments 26:07 The Expanded Problem vs. Theists replies 28:17 Do animals suffer? Neocartesianism 28:51 CS Lewis on Animal Pain 29:35 William Lane Craig's infamous quote 31:21 Replying to Craig and Lewis32:10 Self Awareness32:52 Three bogus levels of pain 33:01 What is pain affect?33:28 The Pre-frontal cortex33:50 The importance of Patient R 35:59 The most critical experiment in theology 38:12 Where does the brain generate pain? 38:51: Sub-cortical regions and the distribution of pain in animals 44:07 The anterior cingulate cortex, another mistake by Theologians45:14 A justification for Neocarteisanism? 45:50 Convergent evolution 46:52 Lobotomy and Craig's contradiction49:10 Summing up and reversing Craig's argument
The fine tuning argument: a theological critique Phil Halper (aka Skydivephil) 2023-08-18 | Hans Halvorson is a Christian and a Professor of Philosophy of Physics at Princeton University. He is skeptical that the universe is fine tuned for life. However , if it is, he thinks it's evidence against God's existence and thus for atheism. This clip is taken from our longer film on the subject, showing a skeptical take on the fine tuning of the universe for life. Featuring Roger Penrose, Carlo Rovelli, Sean Carroll, Alan Guth and many other leading experts. We cover problems of probability, the multiverse, cosmological natural selection and related issues that potentially debunk the fine tuning argument.You can see that film here: youtube.com/watch?v=jJ-fj3lqJ6M&t=1462sa reply to this argument can be found here:youtube.com/watch?v=QJYWkqOzUQ0&t=4036sand our counter reply here:youtube.com/watch?v=zNH-ZgSpBuQWith thanks to Chris (morn1415) for the fabulous images.
Did the Universe Begin? Rethinking the Penrose Hawking & BGV theorems Phil Halper (aka Skydivephil) 2023-07-28 | The Big Bang happened but was it really the beginning of time? Two theorems are often used to suggest it was: The Penrose Hawking Theorem and the BGV Theorem . But new papers out in 2023 have re examined the issue of the beginning and come to a surprising conclusion. We talk to Roger Penrose, Alan Guth, Alex Vilenkin, Ghazal Geshnizjani, Robert Brandenberger, Damien Easson and Niayesh Afshordi to discuss the ultimate question of whether or not the universe had a beginning. A timeline is below. 0:00 Introduction 0:46 Penrose Hawking 2:50 Roger Penrose 4:18 Past eternal Inflation?6:18 Tricked by coordinates7:27 De Sitter Space 9:07 Beyond the BGV10:42 An ambiguity in the BGV11:48 Many things are possible 14:00 Viability of the Bounce 14:56 Beyond Einstein 16: 28 Cuscuton Bounce18:28 G bounce 19:54 Emergent Universe 21:39 What does it mean?
The Fine Tuning Argument debunked by a Jar of Beans Phil Halper (aka Skydivephil) 2023-06-30 | The fine tuning argument for God claims that a fine tuned universe for life is far more likely given God than without God. It's based on the notion that it is extremely unlikely that we could get life permitting values for the constants of nature without a designer. In this short film, Chris Hitchcock, Professor of Philosophy at Caltech and an expert in probability theory and the philosophy of science offers a critique. This clip was taken form a longer film on the subject, you can see here:youtube.com/watch?v=jJ-fj3lqJ6M&t=1221s for a reply from the proponents of the argument see here:youtube.com/watch?v=QJYWkqOzUQ0&t=4036sand for our counter reply see here:youtube.com/watch?v=zNH-ZgSpBuQ&t=2319s
The S8 Tension & the Euclid Satellite : A New Crisis in Cosmology? Phil Halper (aka Skydivephil) 2023-06-02 | In a previous film we covered the Hubble Tension, the fact that measuring the expansion rate of the universe with supernova data yields a significantly different value than with the cosmic microwave background. In the film we report on a new tension called the S8 tension. This has the potential to be even more significant than the Hubble tension. Solutions to it may even change the origin and fate of the universe, describing a time before the Big Bang and dark energy that is not a cosmological constant which may lead to very different fate to the universe. It may also enable us to find signs of quantum gravity theories like String theory or casual sets in the sky. Finally we'll see how ESAs Euclid mission may confirm if the tension is real or just a measurement error. 0:00 Introduction 0:58 Structures in the universe 5:04 what is S8?6:07 measuring S87:08 It doesnt match 10:11 comparison with the Hubble tension12:12 Cosmological constant 13:30 early dark energy15:04 causal set quantum gravity 17:02 string theory to the rescue?20:16 The Euclid Satellite
Before the Big Bang 11: Did the Universe Create itself ? The PTC model Phil Halper (aka Skydivephil) 2023-04-28 | What happened before the Big Bang? In two of our previous films we examined cyclic cosmologies and time travel universe models. Specially, the Gott and Li Model youtube.com/watch?v=79LciHWV4Qs) and Penrose's Conformal Cyclic Cosmology youtube.com/watch?v=FVDJJVoTx7s) . Recently Beth Gould and Niayesh Afshordi of the Perimeter Institute for Theoretical Physics have fused these two models together to create a startling new vision of the universe. In this film they explain their new proposal, known as Periodic Time Cosmology.0:00 Introduction 0:45 NIayesh's story 1:15 Beth's story2:25 relativity 3:26 Gott & Li model 6:23 origins of the PTC model 8:17 PTC periodic time cosmology 10:55 Penrose cyclic model 13:01 Sir Roger Penrose14:19 CCC and PTC 15:45 conformal rescaling and the CMB 17:28 assumptions 18:41 why a time loop?20:11 empirical test 23:96 predcitions26:19 inflation vs PTC 30:22 gravitational waves 31:40 cycles and the 2nd law 32:54 paradoxes 34:08 causality 35:17 immortality in a cyclic universe38:02 eternal return 39:21 quantum gravity 39:57 conclusionElizabeth Gould has asked to make this clarification in the written text " "Despite the availability of infinite time in the periodic time model, this doesn't lead to thermalization in a typical time-evolution scenario, and therefore doesn't, strictly speaking, solve the problem related to thermalization in the power spectrum. The reason for this is that, unlike bounce models with a net expansion each cycle, our model has an effective contraction during the conformal phases. Periodic time, therefore, has a unique character in which it reuses the power spectrum from the previous cycles, which is confined to a given form due to the constraints of the system, rather than removing the old power spectrum and needing to produce a new one."
The Fine Tuning Argument: the critics strike back Phil Halper (aka Skydivephil) 2023-03-17 | At the end of of 2022, we released a film offering a reply to the fine tuning argument for God from leading physicists and philosophers of physics. This included both those that doubt there is any fine tuning and those that think there is but it can be solved by naturalistic means. Subsequently astrophysicist Luke Barnes and philosopher Philip Goff offered their criticism of our criticism. Here we have assembled some of our original talking heads to review their criticism and offer a reply, defending the original position that fine tuning argument for God does not work. Our original film can be found here: youtube.com/watch?v=jJ-fj3lqJ6MLuke Barnes and Philip Goff’s reply is here: youtube.com/watch?v=QJYWkqOzUQ0&t=4036sand we also recommend this video on Bayes theorem on the Majesty of Reason Channel: youtube.com/watch?v=o1MdtyLL3Uw&t=4423sOur panel consists of Graham Priest , Distinguished Professor of Philosophy at The Graduate Center, City University of New York, well known for his work in logic especially non classical logic, the philosophy of mathematics and science and Buddhist philosophy. Barry Loewer, who is the distinguished professor of philosophy at Rutgers University and director of the Rutgers Center for Philosophy and the Sciences. Barry specialises in philosophy of science and philosophical logic and the foundations of quantum mechanics, statical mechanics and probability .Dan Linford who is one of the rising stars in the intersection of the philosophy of physics and philosophy of religion. He did his Phd in philosophy, under Paul Draper and had well known atheist cosmologist Sean Carroll and theistic fine tuning advocate Rob Collins on his thesis committee. He’s now doing a postdoc at the University of Nebraska and recently authored the book Existential Inertia and Classical Theistic Proofs with Joe Schmidt. Niayesh Afshordi who is an astrophysicist and cosmologist , he’s Professor at the University fo Waterloo and faculty at the Permitter Institute for Theoretical physics. Niayesh won the silver medal at the world physics Olympiad as a teenager, won 1st prize the The Buchalter Cosmology Prize and works in a variety of fields from early universe cosmology, black holes, dark energy and quantum gravityOUTLINE0:00 Intro 3:26 Dan’s opening thoughts 6:43 Graham opening thoughts11:23 Niayesh opening thoughts13:33 Barry opening thoughts20:51Bias28:53 Changing the constants 40:21 Bayes theorem 41:36 Objective Bayesianism 51:13 Principle of Indifference 58:27 Infinities 1:00:00 Infinity again1:06:00 Gob vs God 1:15:08 Probability of life given God 1:20:11 Does god need to fine tune?1:24:10 Boltzmann Brains 1:32:57 Entropy 1:39:54 Cosmic Darwin
Physicists & Philosophers debunk The Fine Tuning Argument Phil Halper (aka Skydivephil) 2022-11-17 | The Fine-Tuning Argument is often seen as the best argument for the existence of God . Here we have assembled some of the world's top physicists and philosophers to offer a reply. Not every critic of the argument comes from the same perspective. Some doubt there is a problem to be solved whilst others agree it is a genuine problem but think there are better solutions than the God hypothesis. Some like the multiverse and anthropics other don’t. We have tried to represent these different approaches and so it should be taken as given, that not all of the talking heads agree with each other. Nevertheless, they all share the view that the fine-tuning argument for God does not work. Nor are all the objectors atheist, Hans Halvorson offers what we think is a strong theological objection to the argument. This film does not try to argue that God doesn’t exist only that the fine-tuning argument is not a good reason to believe in God. Most of the footage was filmed exclusively for this film with some clips being re-used from our Before the Big Bang series, which can be viewed here: youtube.com/watch?v=Ry_pILPr7B8&list=PLJ4zAUPI-qqqj2D8eSk7yoa4hnojoCR4m All of the critics of the fine tuning argument that appear were sent a draft of the film more than a month before release and asked for any objections either to their appearance, the narration or any other aspect of the film. No objections were raised, and many replies were extremely positive and encouraging. A timeline of the subjects covered is below: (We define God as a perfect Omni immaterial mind as for example modern Christians and Muslims advocate, there are other conceptions of God which our video does not address). Just to be clear, this is a polemical film arguing against the fine tuning argument. Timecodes0:00 Introduction 4:11 The universe as a roll of the dice 6:15 what is probability? 7:28 probability problems 9:25 measure problem 15:45 deceptive probabilities 20:23 the flatness problem 22:14 counterfactuals versus probabilities 23:59 fine tuning versus God 37:02 necessity38:53 multiverse and anthropics47:34 Boltzmann brains49:45 Entropy 52:45 Cosmological Natural Selection 59:10 conclusion
Kalam Cosmological Argument 2.Physicists and Philosophers strike back Phil Halper (aka Skydivephil) 2022-07-15 | This is the second film we have made, critiquing the Kalam Cosmological Argument. Our first assembled many leading physicists and philosophers to offer what they think is wrong with the argument. It clearly got the attention of William Lane Craig as he made a four part series responding. In this film we reply to his reply. There are yet agin many leading experts here including Sean Carroll, Carlo Rovelli, Niayesh Afshordi, Adrain Moore, Alex Malpass and others. We also made a 6 hour long response video with Dan Linford ( who also appears in this film ), James Fodor and Digital Gnosis . Find that here: youtube.com/watch?v=txG_iVmtgpo&t=4480sAll opinions expressed are those of the person expressing them and should be taken as a collective opinion. Nevertheless, we sent this to everyone involved to make sure no one objected to it. None did. Timecodes0:00 Introduction 3:10 metaphysical absurdity 6:27 infinite subtraction 11:25 infinite future 14:27 Potential infinity 17:25 angels, God and infinity 18:49 infinite countdown 21:32 Grim Reaper Paradox 23:28 Absence of Evidence 23:49 Big Bang Singularity26:46 Quantum Gravity 27:23 Hartle Hawking Model 29:37 BGV Theorem 32:25 Quantum Eternity Theorem 34:00 Cherry Picking 36:00 Collapsing Universe 40:46 Reversing the arrow of time 41:46 entropy 42:50 Wall theorem44:27 singularities again 45:19 Neo Lorentzianism 54:10 models with a beginning 55:47 causality and QM 1:02:00 causes and cats 1:04:33 metaphysical principle1:06:19 simultaneous causation 1:07:48 time travel 1:08:40 free agent 1:12:47 desperate atheists 1:14:35 summing up Cast:Adrian Moore Graham Priest, Wes Morriston Alex Malpass Daniel Linford Sean Carroll Niayesh Afshordi Carlo Rovelli Barry Lower Chris Hitchock Susanne Schander Abhay AshtekarArif Ahmed Aurelien Barrau Alistair Wilson Alan Guth Alex Vilenkin Simon Saunders
Physicists & Philosophers debunk the Kalam Cosmological Argument featuring Penrose, Hawking, Guth Phil Halper (aka Skydivephil) 2022-01-14 | We have assembled some of the world’s leading physicists and philosophers to reply to the Kalam Cosmological Argument for God (as presented in popular debates by the Christian Philosopher William Lane Craig). The argument says that everything that begins to exist has a cause, the universe began to exist, therefore the universe has a cause, which must be God. We show the flaws in this argument, featuring interviews we conducted with physicists Roger Penrose, Stephen Hawking, Alan Guth, Carlo Rovelli, Alex Vilenkin, Niayesh Afshordi and many others as well as philosophers such as AW Moore (co-editor of the world's leading philosophy journal Mind), Oxford logician Daniel Isaacson, Cambridge philosopher Arif Ahmed, philosopher of science specialising in foundations of quantum mechanics Alastair Wilson, and Alex Malpass and Daniel Linford who have both published multiple articles on the Kalam in leading journals. Most of the footage was shot especially for this film and all of those participants reviewed it carefully before release. All of the other living participants, where we reused interview footage from previous films, were sent a draft of this one in advance and asked if they objected to appearing or wanted changes. None objected and all changes are in the final film you see. Most participants gave extremely positive feedback and we hope you will too.Timecodes0:00 Introduction 1:38 Actual versus Potential Infinity 2:40 Cantor's Infinity 3:06 The Infinite Property 5:42 Hilbert’s Hotel 11:16 Contradiction & not a Contradiction 13:38 Jupiter and Saturn 14:52 Physicists on Infinity 16:38 Counting to Infinity 18:36 The Infinite Future 22:35 Spacetime Singularity 24:50 Carlo Rovelli on Neo Lorentzian Relativity and Cosmic Time 28:29 Hawking, Penrose, Vilenkin, Efstathiou on The Big Bang & Quantum Gravity 29:37 Strings, Loops and the Big Bounce 31:16 Guth and Vilenkin on the BGV 34:00 Is a Collapsing Universe Unstable? 35:31 Wall Theorem, Ashtekar and Afshordi 36:36 Anthony Aguirre on Past Eternal Universe 37:47 Singularities, Magueijo and Vidotto 38:24 Second Law, Guth and Ashtekar40:43 A Universe From Nothing? Vilenkin 42:53 Causality 44:17 Interpretations of QM 48:05 Tigers in Our Living Room, Vilenkin 49:44 Causality and Philosophy 51:25 Simultaneous Causation 54:46 Can The Universe Create Itself? 56:51 Ghazali's Argument 57:53 Closing Arguments
String Theory or Loop Quantum Gravity? David Gross vs Carlo Rovelli Phil Halper (aka Skydivephil) 2021-12-19 | String theory has dominated discussions at the frontiers of physics for decades, especially in the attempts to build a quantum theory of gravity. But does it deserve its exalted status? Nobel Prize winner and String Theory pioneer David Gross debates Carlo Rovelli, one of the founding fathers of Loop Quantum Gravity. The discussion is lively; full of insights, insults, backhanded compliments and even some common ground as to the nature of physics.Timecodes0:00 Introduction 3:00 David Gross early years, 4:00 Carlo Rovelli early years 5:22 David on string theory 20:22 Carlo on string theory 31:08 David&Carlo on string theory 53:20 Loop Quantum Gravity 1:00 David&Carlo on LQG1:21 Black Holes1:30 Predictions and the Scientific Method
Multiverse or Cyclic Universe ? Alan Guth vs Roger Penrose Phil Halper (aka Skydivephil) 2021-08-16 | Do we live in a multiverses or a cyclic universe? Most cosmologists today accept the universe underwent a very rapid period of expansion called inflation. But inflation seems to lead to an infinite multiverse. Not everyone is happy with this multiverse ; and some cosmologists have sought alternatives to inflation. These alternative schemes are often cyclic. The chief proponent of one such cyclic model is 2020 Nobel Prize Winner Sir Roger Penrose. In this video the father of inflation Alan Guth and Sir Roger discuss the pros and cons of the inflationary multiverse versus Sir Roger's Conformal Cyclic Universe. We highly recommend watching our film on eternal inflation with Alan Guth and colleagues youtube.com/watch?v=QqjsZEZMR7I&t=2486sand our film on CCC with Roger Penrose and colleagues youtube.com/watch?v=FVDJJVoTx7sand other films in our Before the Big Bang Series which features Stephen Hawking, Alex Vilenkin and others. youtube.com/watch?v=Ry_pILPr7B8&list=PLJ4zAUPI-qqqj2D8eSk7yoa4hnojoCR4m
The Big Bounce, Signs in the CMB? A Loop Quantum Gravity update Phil Halper (aka Skydivephil) 2020-06-10 | Is there evidence of a cosmic Big Bounce in the sky? Can dark energy be solved by quantum gravity? In our second report from the most recent Loop Quantum Gravity Conference, we interview many of the leading physicists in the field to get an update on experimental searches for signs of Loop Quantum Gravity and Cosmology.
Black Holes, Dark Matter & Quantum Gravity, whats new in Loop Quantum Gravity Phil Halper (aka Skydivephil) 2020-03-14 | Are back holes related to dark matter? Do the observations of black holes by LIGO hint at a signature of quantum gravity ? Can we find evidence of black holes from a previous universe? In 2019 second place in the Buchalter Cosmology Prize was awarded to two of the speakers you will see in this film which explores some of the above themes. We filmed this at the Loop Quantum Gravity Conference in 2019 and plan to make a follow up film exploring the latest ideas in the field. Look out for the optical illusion around 8:12 -8:25
Genesis & Cosmology Atheist/Christian debate Phil Halper (aka Skydivephil) 2020-02-27 | Christian Jeff Zweernk and Atheist Skydivephil debate whether the creation story in Genesis is myth of fact.This was originally hosted by Modern Day Debates and he was kind enough to let me upload it to my channel here.
Have Scientists Solved Consciousness? Introducing the PCM, a scientific theory of consciousness. Phil Halper (aka Skydivephil) 2019-12-02 | What is consciousness? Can science explain consciousness? The worlds most cited neuroscientist Karl Friston and colleagues David Rudrauf and Ken Wiliford explain their new theory of consciousness and its links to AI and VR. According to Wired magazine Friston is "the genius neuroscientist who may hold the keys to true AI" and in this film we will explain how the model may do that and much more. Topics discussed are: 00: Introduction 00:43 Beginnings 2:50What is consciousness? 3:48How can science tackle the subjective? 5:03 Answering critics of a scientific approach to consciousness 5:30 What is the free energy principle ?7:58 What is active inference?9:46 What is projective geometry ?11:34 The PCM explained 14:40 Contrast with Tenoni's IIT17:31 Consciousness in animals and AI25:18 Virtual Reality 27:55 The Hard Problem of Consciousness 29:33 Experimental Testing 38:46 Autism, Clinical Implications and Pyschopathologies 41:28 The future of the model
Before the Big Bang 1O : Black Hole Genesis Phil Halper (aka Skydivephil) 2019-10-04 | We interview the creators of 3 models of the early universe that imply the big bang came from a black hole in a mother universe. The models are Cosmological Natural Selection (CNS), The Holographic Big Bang and Cosmology with Spin and Torsion. The creators interviewed are Lee Smolin, Nikodem Poplawski and Niayesh Ashfordi. Recently it has also been shown that a theory of quantum gravity called Causal Set Theory may realise CNS. And so we also talk to Stav Zalel who has worked on this idea and cosmologist Aureliein Barau The order of subjects is LS: Lee Smolin NA: Niayesh Ashfordi SZ: Stav Zalel NP: Nikodem Poplowski AB: Aurelien Barau00:00 Introduction 51:55 LS and SZ on CNS3:53 the prehistory of CNS6:08 NA doubt on fine tuning 7:33 NA on The Holographic Big Bang 10:32 NA explains The Holographic Principle 13:41 NP on Cosmology with Spin and Torsion 16:16 NP on anti matter 17:44 SZ on quantum gravity 18:21 LS and NP on the big bounce20:23 SZ and AB on Causal Set Theory 21:32 SZ on comparison with Loop Quantum Gravity 21:47 AB and SZ on predicting the cosmological constant 23:24 SZ on linking CNS and Causal Set Theory 24:53 NA on string theory connection 25:46 LS on neutron star predictions30:15 LS on inflation and CNS31:08 NP on inflation and torsion 33:08 NA on replacing inflation 35:25 LS on CNS versus eternal inflation 36:55 NA on the difference between CNS and The Holographic Big Bang 37:14 LS, NP and NA on entropy 38:40 LS and NA on Roger Penrose’s criticism 40:47 LS, NP, SZ and NA on an eternal past 43:49 LS on answering Leonard Susskind44:39 LS on scare resources45:08 NA on CMB predictions 46:06 LS summing up
Insanely Fast Pulsing Northern Lights/Aurora Borealis. Real time video. Phil Halper (aka Skydivephil) 2019-10-01 | The northern lights or aurora borealis are spectacularly shown in the this real time video of extremely fast pulsing auroras. The third stage of an auroral substorm often sees the lights pulsing on and off. I have seen this many times but never at these sorts of speeds. It wasn't the highest Kp value I've seen at all, so why was this so special? Answers welcome.
Roger Penrose vs William Lane Craig, Cyclic Cosmology & Fine Tuning Phil Halper (aka Skydivephil) 2019-09-07 | Mathematical Physicist Sir Roger Penrose vs William Lane Craig go back and forth on whether Penrose's Cyclic Cosmology is a cyclic cosmology and whether the universe is fine-tuned for life. Craig had made his name, partially at least, on promoting the idea that the Penrose Hawking singularity theorems imply a beginning of the universe at the big bang and therefore God. But modern cosmologists do not think these theorems apply to the universe. . Penrose himself has created a cyclic cosmology which Craig misrepresented as a cosmology that has a beginning. Much of the footage is taken from our film on Penrose's Cyclic model which you can see here:youtube.com/watch?v=FVDJJVoTx7sfor the debate between Carroll and Craig see here:youtube.com/watch?v=X0qKZqPy9T8&t=4084s
The Big Bangs new meaning, with Stephen Hawking, Roger Penrose and other leading cosmologists Phil Halper (aka Skydivephil) 2019-08-22 | What happened before the big bang? The questions used to written off as meaningless. But the Big Bang has changed it's meaning . Stephen Hawking, Roger Pernsoe and many other leading cosmologists explain why and clear up common misconceptions. Featured Scientists include Roger Penrose, Stephen Hawking, George Efstathiou, Gabriele Veneziano, Abhay Ashtekar, Alan Guth and Alex Vilenkin For our Before the Big Bang Series (from which much of this video was complied from )see here:youtube.com/watch?v=8CChnwOsg9I&list=PLJ4zAUPI-qqqj2D8eSk7yoa4hnojoCR4m
The Future of Gravitational Wave Astronomy Phil Halper (aka Skydivephil) 2019-08-08 | Leading experts (including Nobel Prize Winner Rai Weiss) discuss the future and far future of gravitational wave astronomy from upgrading LIGO to larger ground based detectors such as The Einstein telescope and The Cosmic Explorer to spaced missions such as LISA, DECIGO and the Big Bang Observer. For a timeline of content see below:RW =Rainer Weiss - MITBS =Bangalore Sathyaprakash - Penn State SR = Shelia Rowan - Glasgow University GG= Gabriela González Louisiana State BFS = Bernard F Shutz - Cardiff University JB = John F Beacom - Ohio State MAM = Miguel Alejandro Mostafá - Penn State 00:00 SR on invisible messengers 00:30 narration on gravitational waves 1:21 RW on the first discovery4:47 BS on first discovery 5:10 RW on the colliding black holes5:30 BS on the mystery of the black hole masses and spins 6:41 GG on discoveries to date7:46 narration on improving LIGO 8:10 SR on new technologies for imprivng ground based detectors10:03 BS on upgrading LIGO10:25 SR on new ground based detectors 11:38 narration on the Hubble tension 12:24 BFS on standard sirens and solving the Hubble tension 13:35 GG on larger ground based detectors beyond LIGO 15:19 RW on the above topic 15:44 BFS on the above topic 16:08 narration on LISA16:23 SR on the need for a space based mission 17:39 RW on LISA19:13 BFS on LISA 20:35 SR on LISA20:48 RW on LISA21:01 GG on LISA22:26 RW on LISA22:54 BS on surprises 23:17 RW on LISA24:26 BS on pulsar timing arrays 25:39 narration on the mysteries that gravitational waves can unlock 25:55 BS on dark matter 27:26 narration on modified gravity 27:29 SR on modified gravity 29:14 BFS on dark matter 29:48 BS on dark energy 30:32 GG on dark energy 30:49 BFS on dark energy 32:27 BS on quantum gravity 33:49 BFS on quantum gravity 36:18 narration on multi messenger astronomy 36:42 JB on above topic37:06 MAM on neutron star collisions 38:02 JB on neutrinos 38:27 MAM on AMON 40:39 narration on how do black hole and black binaries form40:49 RW on above topic41:12 JB on neutrinos and above topic 42:27 JB on the CNB cosmic neutrino background 44:26 MAM on cosmic rays 45:47 BFS on missions to look for primordial gravitational waves 48:07 RW on the Big Bang Observer
The Story of Loop Quantum Gravity- From the Big Bounce to Black Holes Phil Halper (aka Skydivephil) 2019-05-22 | What happens at the centre black holes? What happened before the big bang? A quantum theory of gravity is needed to answer these questions . Many of the leading scientists who developed Loop Quantum Gravity, one of the most promising attempts, tell the story of how it was developed in this film. We also go on to explore how the theory may be tested via observations of black holes or probing the very early universe. We interview Carlo Rovelli, Lee Smolin, Abhay Ashtekar, Sir Roger Penrose, Aurélien Barrau and Francesca Vidotto. The film tackle some of the biggest questions of existence. Since we filmed this last year Francesca Vidotto has been appointed professor at the University of Western Ontario!. Congratulations Francesca. A timeline of the subjects is below:00:00 Intro 00:58 Scientists introduce themselves3:07 First steps , early attempts at quantum gravity 7:05 What is a gauge theory ?8:10 Ashtekar's rewrites relativity 11:00 Lee, Carlo and Abhay on each other. 12:40 Lee and Ted solve the quantum gravity equation 13:22 Getting rid of the Lattice. 14:30 Lee and Ted are stuck 15:34 Carlo solves the problems 18:27 Why Loop Quantum Gravity is not about loops 19:45 It's been done before 21:17 Roger Penrose spin networks 25:30 How Abhay came to work for Roger 26:50 The entropy of black holes 30:33 Loop theorists on string theory 34:25 Loop Quantum Gravity and dynamics35:53 The big bang 36:56 Martin Bojowald resolves the singularity ]37:30 The big bounce37:45 Improved big bounce model 38:39 Signatures of the big bounce in the sky 42:50 Hawking Hartle No boundary proposal from LQC? 43:53 No singularities can form in the early universe44:14 Predicting the duration of inflation 45:05 Effects from the universe before the bounce45:27 Has the universe always existed?47:10 Penrose Hawking singularity theorem48:03 BGV theorem 48:49 Wall theorem 49:20 Why was the big bang such low entropy?50:40 Erebons 52:02 Gravitational entropy 53:40 Are contracting universes unstable and so what if they are?54:58 Fine tuning and the multiverse57:05 Is inflation fine tuned , LQC versus GR57:55 Lorentz invariance?1:01:20 Where do the new spacetime atoms come from?1:01:50 Black holes in Loop Quantum Gravity 1:03:01 Bouncing black holes 1:05:10 Testing bouncing black holes with fast radio bursts and other methods 1:10:22 Going through the bounce 1:11:37 What comes next?1:13:14 What's it like to gamble your career on a bold new idea?
Quantum Gravity Theories: Can they now be tested? Phil Halper (aka Skydivephil) 2019-04-12 | Almost every quantum gravity theory is reviewed here by Professor Aurélien Barrau, a physicist and philosopher at the Université Grenoble Alpes. Barrau explain how each of the many competing theories of quantum gravity may come into contact with experiment. He covers:00:00 introduction 00:43 String Theory 4:15 Loop Quantum Gravity 6:07 Non Commutative Geometry 8:08 Causal Sets10:55 Asymptotic Safety13:14 Causal Dynamical Triangulations 14:46 Horava Lifshitz Gravity
Before the Big Bang 9: A Multiverse from Nothing Phil Halper (aka Skydivephil) 2019-03-13 | Did the universe have a beginning or has it always existed? Is there just one universe or many? In this series we explore competing models for what happened at or before the big bang. In this episode we interview Alex Vilenkin who proposed the universe had a spontaneous origin from “nothing" and with no cause! He also showed how our big bang would not be alone, that there would be an infinite number of big bangs generating a multiverse. The idea of a universe from nothing has of course been discussed elsewhere. But here we clear up many misunderstandings of the concept with the scientist who invented it. In particular, the proposal that the universe came from nothing is not to be confused with the proposal that the universe originated from a vacuum fluctuation. Below is lit of topics we discuss. Please note we did not release the film until Alex Vilenkin saw a draft and approved it. 00intro and Alex Vilenkin talk about his early life. 2:28 The uncertainty principle 3:16 Tryon’s proposal 5:32 Inflation 7:00 Quantum Tunneling 8:21 Tunnelling From Nothing 12:38 Difference between Tryon’s and Vilenkin’s proposal 13:45 Semi Classical Gravity 15:04 What caused the universe 16:05 Interpretation of QM and implications for cosmology 19:00 Why don’t tigers appear in our living room if things can come from nothing?21:07 how do we get a multiverse? 23:25 was inflation before or after the big bang? 25:12 Alan Guth’s reaction to Vielnkin’s multiverse proposal. 26:10 Experimental tests of the multiverse 28:17 Indirect test of the multiverse and fine tuning. 33:08 has a recent undermined the multiverse?36:46 experimental probe of tunnelling form nothing 37:42 geometry of the universe and tunnelling form nothing. 38:50 are the physical laws just description or are they are more than that? 39:24 way are the laws of physics the way they are?40:31 Boltzman Brain 42:15 The Hartle Hawking Proposal 43:21 Responding to Neil Turok and colleagues new critique44:50 BGV theorem 47:15 low entropy 47:41 Does anyone back the one big bang one era universe? 48:13 Does infinity exist in the real world?50:51 Where next for the proposal and early universe cosmology?
The Cowboy Philosopher 3: Adam and Eve for Dogs? Phil Halper (aka Skydivephil) 2019-02-19 | Warning , this satire, not to be taken seriously!
