> childcare needs to give parents an actual break. In my experience caring for your small children is really demanding work. On the one hand you need to be focused on the situation in order to protect the children and on the other hand there is not much going on for entertaining yourself. Creative or focused deep work where you get a positive feeling of accomplishment also counts as a break from childcare for me. So…
The only thing I would like to add to this thinking is that it also explains cultural norms. If a child is getting input from that many different adults it becomes an averaging of the culture norms.
More directly, it greatly softens the inevitable blows from highly-concentrated, inexperienced parenting.