Uploaded December 2025 | Updated September 2026, 2 weeks ago
-----Ken Ham just made an extraordinary claim: at least 100,000 people make a profession of faith in Christ each year after visiting the Ark Encounter and Creation Museum. That's quite a statement—and it demands some scrutiny.
In this video, I break down the math behind this claim and examine what it would actually mean if true. With roughly 1.4 million unique annual visitors to both attractions, we're looking at either a 7% conversion rate of all visitors—or if we account for the fact that most visitors are already Christians, potentially a 35% conversion rate among non-believers. That would make Ken Ham a far more effective evangelist than Billy Graham ever was.
I dig into what real research methodology requires: clear operational definitions, proper sampling techniques, pre- and post-visit surveys, follow-up studies, and transparency about methods. What did Answers in Genesis provide? A single sentence: "surveys guests filled out when they leave our attractions." That's it.
As someone who has been involved in conducting human subjects research and evaluated countless student research projects, I walk through the red flags: social desirability bias, selection bias in exit surveys, the lack of any follow-up verification, and the complete absence of published methodology. When someone makes extraordinary claims but refuses to show their work, that should raise serious questions.
This isn't about opposing genuine conversions—it's about asking whether Christians should hold ourselves to higher standards than politicians throwing out impressive-sounding numbers in fundraising appeals.
CHAPTERS:
0:00 - Ken Ham's Extraordinary Claim
0:58 - The Blog Post: "What Has Research Revealed?"
3:38 - Let's Do the Math: 7% Conversion Rate?
5:45 - Most Visitors Are Already Christians
8:56 - A 35% Conversion Rate? Better Than Billy Graham?
10:50 - What Real Research Actually Requires
13:05 - Operational Definitions: What Counts as a "Profession of Faith"?
15:56 - Social Desirability Bias and Peer Pressure
18:41 - Sampling Methodology Problems
24:05 - What's Probably Really Happening
26:52 - Why Won't They Share the Data?
30:23 - A Pattern in Answers in Genesis Communications
32:43 - Should Christians Care About Truth in Our Claims?--------------------------------------------------------------------------------------
Joel Duff (aka Dr. Duff or The Natural Historian) resources:
About: joelduff.org
Blog: thenaturalhistorian.com
Twitter: twitter.com/NaturalHistoria
Facebook: https://www.facebook.com/thenaturalhi...
Photography "Portraits of Creation:" beechnutphotography.com
--------------------------------------------------------------------------------------------
-----Ken Ham just made an extraordinary claim: at least 100,000 people make a profession of faith in Christ each year after visiting the Ark Encounter and Creation Museum. That's quite a statement—and it demands some scrutiny.
In this video, I break down the math behind this claim and examine what it would actually mean if true. With roughly 1.4 million unique annual visitors to both attractions, we're looking at either a 7% conversion rate of all visitors—or if we account for the fact that most visitors are already Christians, potentially a 35% conversion rate among non-believers. That would make Ken Ham a far more effective evangelist than Billy Graham ever was.
I dig into what real research methodology requires: clear operational definitions, proper sampling techniques, pre- and post-visit surveys, follow-up studies, and transparency about methods. What did Answers in Genesis provide? A single sentence: "surveys guests filled out when they leave our attractions." That's it.
As someone who has been involved in conducting human subjects research and evaluated countless student research projects, I walk through the red flags: social desirability bias, selection bias in exit surveys, the lack of any follow-up verification, and the complete absence of published methodology. When someone makes extraordinary claims but refuses to show their work, that should raise serious questions.
This isn't about opposing genuine conversions—it's about asking whether Christians should hold ourselves to higher standards than politicians throwing out impressive-sounding numbers in fundraising appeals.
CHAPTERS:
0:00 - Ken Ham's Extraordinary Claim
0:58 - The Blog Post: "What Has Research Revealed?"
3:38 - Let's Do the Math: 7% Conversion Rate?
5:45 - Most Visitors Are Already Christians
8:56 - A 35% Conversion Rate? Better Than Billy Graham?
10:50 - What Real Research Actually Requires
13:05 - Operational Definitions: What Counts as a "Profession of Faith"?
15:56 - Social Desirability Bias and Peer Pressure
18:41 - Sampling Methodology Problems
24:05 - What's Probably Really Happening
26:52 - Why Won't They Share the Data?
30:23 - A Pattern in Answers in Genesis Communications
32:43 - Should Christians Care About Truth in Our Claims?--------------------------------------------------------------------------------------
Joel Duff (aka Dr. Duff or The Natural Historian) resources:
About: joelduff.org
Blog: thenaturalhistorian.com
Twitter: twitter.com/NaturalHistoria
Facebook: https://www.facebook.com/thenaturalhi...
Photography "Portraits of Creation:" beechnutphotography.com
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