How do you know? Stating an unsourced claim confidently doesn't make it true. Historically, plenty of societies had kids who didn't spend much time around thei

How do you know? Stating an unsourced claim confidently doesn't make it true. Historically, plenty of societies had kids who didn't spend much time around their peers, aside from family. It's not uncommon for a family to be ma, pa, and kids living on a farm, or hunting-gathering in a forest. The invention of same-age peer groups in schools is pretty modern, on evolutionary timescales. ... and kids see plenty of faces at home and in other non-school settings.