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Bayes’s Theorem: the mathematical formula that ‘explains the world’

An obscure 18th-century Presbyterian minister’s insights into statistics are still valued today in making strategic economic decisions and forecasts

8 June 2024

9:00 AM

8 June 2024

9:00 AM

Here’s a profound question about beards: is the number of acrobats with beards the same as the number of bearded people who are acrobats? Go with your gut instinct. It’s not a trick question. If you answer ‘yes’, then you’ve understood the central idea behind Bayes’s theorem. If you’re one of those people who likes to titter about how bad you are at mathematics, stop it.

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