Why Do Males Exist? (The Adaptive Valley, Part 1)

Why do males exist? It doesn't make any sense. Introduction: Convergent Structures Convergent Structures are where two species develop the same characteristics, separately. They acquired like traits because they worked, not because of any shared ancestor. This should be familiar from high school bio. Birds evolved wings - but so did many and mammals (with the bats). … Continue reading Why Do Males Exist? (The Adaptive Valley, Part 1) →

The errors with Bret Weinstein’s four-part test of adaption

A biologist I admire, Bret Weinstein, employs a four-part test to determine whether a trait is the product of evolution. https://www.youtube.com/watch?v=DtdOhBoZfNg Is it complex? Does it have a cost? Is there variation in the amount of cost that is spent? Does it persist over evolutionary time? If a trait has all of those characteristics, then … Continue reading The errors with Bret Weinstein’s four-part test of adaption →