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A comment on Why are male testosterone levels falling?. Parent comment

Re:Why are male testosterone levels falling? by vegetablepotpie on Sunday November 13, 2022 @10:17AM (#33583770)
It’s sort of like a mathematical proof. If I say there are only 7 barker codes, all you need to do is find the 8th to prove me wrong.

If I say testosterone levels cause men to be more assertive, here is an example where that is not the case.

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Re:Why are male testosterone levels falling? by ponow on Sunday November 13, 2022 @10:31AM (#33583911)
In almost all of these health discussion, assertions generally involve an implicit "on average". So, no, it's not like a mathematical proof, which requires a single counter-example to dismantle.

E.g., men are taller than women, is a typical statement that is understood "on average".

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