I think that in general animals and people learn most efficiently by making mistakes. Sure, I am talking about mistakes that do not kill us. But even mistakes that kill, have hopefully a learning effect on those who observe.

I think as well that we as a society should learn to be more empathic, more tolerant, to learn how to forgive, and to avoid mob judgements.

Both, are my opinions. I don't know if there are any studies or references to this.