epistemic rationality: trying to see things as accurately as you can
instrumental rationality: making decisions that help you effectively achieve whatever goals you may have
some say humans are naturally rationally irrational. That is, good at instinctively choosing just the right amount of epistemic irrationality in order to achieve their goals.
Julia Galef doesn’t agree. says: we shouldn’t expect that we would have evolved eons ago to have a good balance of scout/soldier mindset in the modern world.