Comments by "bj0rn" (@TheLivirus) on "The strange politics of disgust | David Pizarro" video.

  1. Keep in mind that evolution is a driscrete process. A creature's genome remain the same throughout its' life time, regardless of what it eats. It's only the probability of reproduction and raising offspring that changes. Although meat/fish might enhance the positive effects of having an advanced brain, it's generally considered that it was a drastic environmental change that was the main factor that drove the genetic drift towards higher intelligence.
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  2. Yeah sure, DNA in individual cells can be damaged (mutated) during your life time (eg. cancer), but let's keep this in context. Unless the cell is a spermatogonium it won't transfer to the offspring, and unless this mutation is not biased in towards a more advanced brain, it does not cause genetic drift (apart from natural selection). While the prior is unlikely but possible, the latter is against everything I know about evolution. Mutations are not biased to favour certain traits.
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