At the risk of sounding like a broken record, I thought that I would make my point though the comic genius of others.
I would add that I don’t agree with everything John Cleese says, as he has made a number of errors about deterministic and probabilistic processes. But genes do build brains and ultimately cultures so the issue is graded rather than categorical. See my earlier blog about genes for language as opposed to genes for Shakespeare. But yes there is no gene for preferring Nicholas Cage movies or coconut ice-cream.
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