The Bactra Review Brainchildren
Considering the degree of close cooperation our ancestors would have needed to
survive, I rather suspect they were subject to selection pressure for
folk-psychological predictability. Clearly, I think, if you depend on your
fellows knowing what you're up to, and they're using scheme F to
do that, you're more likely to survive if F is a good predictor of
your behavior. Of course, if there's variation in F as well, then
the variants which do the best job of predicting behavior (including yours)
will be favored. This is a rather benign evolutionary arms-race.