Category Archive: Bayes’ Theorem

May 23 2013

Two Bayesian Fallacies

Depiction of the long-form equation for Bayes' Theorem: the probability of a hypothesis (h) given all evidence (e) and background knowledge (b) equals the product of the probability of the hypothesis (h) given only background knowledge (b) and the probability of the evidence (e) given the hypothesis (h) and background knowledge (b), divided by the sum of that same product and the product of the probability of the hypothesis being false (not-h) given only background knowledge (b) and the probability of the evidence (e) given the hypothesis being false (not-h) and background knowledge (b).

At INR3 in Kamloops I spoke on applying Bayesian logic to the study of Jesus along with the same principles we apply to dead religions (so as to avoid the “don’t offend the Christians” reaction to controversial claims…claims that would not be controversial if Jesus was not the object of worship of billions of loud, …

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Jan 09 2013

Bayesian Atheism Even Lowder

Yesterday’s post inspired someone to point me to another gem in the same category: the ongoing work of Jeffery Jay Lowder at The Secular Outpost on Bayesian Arguments for Atheism and theism. He has a long archive on that topic there and continues to post on debates in religion analyzing them in Bayesian terms. Though …

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Jan 08 2013

Bayesian Atheism

James Lindsay has been doing some great blogging on how to apply Bayesian reasoning to model John Loftus’ Outsider Test for Faith (or OTF). A while ago I asked for recommendations of bloggers that often write about Bayes’ Theorem for a general audience (see Bayesian Blogging), and a few came up there. This is another. …

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Dec 04 2012

Miracles & Historical Method

Fan photo of Dr. Carrier in shadow before stage screen showing slide that says 'Conclusion: Christians Were Big Ass Liars'

Video of my talk for this year’s Skepticon is now available on YouTube. See Miracles and Historical Method. Description: Carrier talks about how to think critically about history generally, using miracles as an entertaining example. Builds on his talk last year on Bayes’ Theorem, but this time it’s more about method than math, and surveys …

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Oct 09 2012

Understanding Bayesian History

ph

So far I know of only two critiques of my argument in Proving History that actually exhibit signs of having read the book (all other critiques can be rebutted with three words: read the book; although in all honesty, even the two critiques that engage the book can be refuted with five words: read the …

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Sep 10 2012

McGrath on Proving History

James McGrath has reviewed my book Proving History. We’ve argued before (e.g. over claims Bart Ehrman made), so there is backstory. But his review is unexpectedly kind and praising at points, and he likes the overall project of explaining the underlying logic of history as fundamentally Bayesian and making productive use of that fact. He …

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Aug 30 2012

Bayesian Blogging

btneon

This is a request to all fans of Bayes’ Theorem out there: I’m looking for the best blogs and websites substantially devoted to discussing all things Bayesian. Of course I know about Less Wrong, the brainchild of Eliezer Yudkowsky, which often discusses Bayesian reasoning and is a fabulous website for learning about human reason, and …

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Aug 06 2012

New Bayesian Calculator

Thanks to Cam Spiers (who has produced an interesting selection of free javascript Bayesian Calculators), I have updated my own Bayesian Calculator page using the most basic of those. This might be updated again in coming months. Right now it only allows running calculations with two-digit probabilities from .01 to .99 (or 1% and 99%), …

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Jun 29 2012

The Jesus Tomb and Bayes’ Theorem

talpiottombentrance

Finally, a mathematician actually gets the math right on the Jesus Tomb hypothesis. Conclusion? We have not found the tomb of Jesus. For those who already know the backstory and want to jump right to it, read Bayes’ Theorem and the “Jesus Family Tomb” by physicist Randy Ingermanson. He approached the problem like a physicist …

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Feb 22 2012

The Lame That Would Not Die!

orpheus

What is The Lame? Unfortunately no one can be told what The Lame is. You have to see it for yourself. No, just kidding. It’s the claim that “Science Requires a Christian Worldview.” JT just blogged that, responding reasonably enough to a repeat of a standard Christian apologetic shibboleth (and, as he callously and shamelessly …

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