Uploaded February 2021 | Updated September 2026, 14 hours ago
This video is about valid and invalid arguments. First, we discuss the value of standard form arguments. Then, we see two ways an argument can go wrong: if it has a false premise, or if the conclusion doesn't follow from the premises. We discuss the definition of validity and how it is similar to playing pretend. Then, we cover six general valid argument forms and two general invalid argument forms. We close with three tips for discovered validity and invalidity, and finally a distinction between two kinds of validity. Much of the content from the video is taken from Feldman's _Reason and Argument_, chapter 3.
0:00 intro (arguments & standard form)
5:48 three steps of argument analysis
7:50 introducing validity
12:35 defining valid and invalid
15:37 eight examples of valid and invalid arguments
18:55 patterns of argument & logical words
24:19 valid argument forms
28:17 invalid argument forms
30:56 three tips for finding validity and invalidity
35:23 two kinds of validity
37:45 summary and conclusion
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Check out my website: liz-jackson.com
For more on my research: liz-jackson.com/research
For popular-level interviews, podcasts, and blog posts I’ve done: liz-jackson.com/public-philosophy
Follow me on social media:
Twitter: twitter.com/lizjackson111
Instagram: @lizjackson111
Facebook: facebook.com/lizjackson111
This video is about valid and invalid arguments. First, we discuss the value of standard form arguments. Then, we see two ways an argument can go wrong: if it has a false premise, or if the conclusion doesn't follow from the premises. We discuss the definition of validity and how it is similar to playing pretend. Then, we cover six general valid argument forms and two general invalid argument forms. We close with three tips for discovered validity and invalidity, and finally a distinction between two kinds of validity. Much of the content from the video is taken from Feldman's _Reason and Argument_, chapter 3.
0:00 intro (arguments & standard form)
5:48 three steps of argument analysis
7:50 introducing validity
12:35 defining valid and invalid
15:37 eight examples of valid and invalid arguments
18:55 patterns of argument & logical words
24:19 valid argument forms
28:17 invalid argument forms
30:56 three tips for finding validity and invalidity
35:23 two kinds of validity
37:45 summary and conclusion
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Check out my website: liz-jackson.com
For more on my research: liz-jackson.com/research
For popular-level interviews, podcasts, and blog posts I’ve done: liz-jackson.com/public-philosophy
Follow me on social media:
Twitter: twitter.com/lizjackson111
Instagram: @lizjackson111
Facebook: facebook.com/lizjackson111
