The brain seems to think in categories. We could hypothesize about how this increased the number of copies of genes that got into the next generation for individuals who thought more in categories than not, in the past. Many many categories: subject/predicate, self/other, blue/green, high/low, good/bad, etc. Categories also come with bias. We tend to ignore information that is inconsistent with the category. This can be both helpful and harmful. Another category: helpful/harmful.
August 22, 2013 by m4u
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