For gazillions of years young humans grew up surrounded by kin, maybe not learning maths and chemistry, but basically learning about being part of human society. Very, very recently we started eradicating that part of our evolution and stuffing kids into packets called schools. From the age of maybe 5 to around 18, when before they would have been learning basically to be humans, they are now separated for most of their waking hours from their kin, surrounded by people who are pretty much strangers. What effects is this drastic change having on individuals and on society in general? Is it bad for us?