How we learn from those around us: an essential guide to understanding how people behave. Humans are, first and foremost, social creatures. And this, according to the authors of I'll Have What She's Having, shapes--and explains--most of our choices. We're not just blindly driven by hard-wired instincts to hunt or gather or reproduce; our decisions are based on more than "nudges" exploiting individual cognitive quirks. I'll...