Gravity is probably also learned at the same time we learn how to use our muscles from how we must compensate for it when moving, also from seeing how things ha

Gravity is probably also learned at the same time we learn how to use our muscles from how we must compensate for it when moving, also from seeing how things have a tendency to approach the ground unless something gets in the way, and from the sound things make when they hit the floor. I don't think there's much opportunity to experience gravity before birth in order to train it, and I can't think of anything the brain would need to know about gravity beyond how we experience it with our senses. > And what about fight or flight reflexes and presupposing monsters in the shadows? My understanding is that these had a primitive evolutionary basis and that we came hardwired to respond to certain stimuli. Maybe pre-wired behaviors can depend on non-pre-wired stimuli, like a function that's conditioned on an undefined function and evaluates to false on exception.