There is no reason (that I’m aware of) to think that prior to recorded history we were somehow more restrained with groups/individuals who were weaker than us o

There is no reason (that I’m aware of) to think that prior to recorded history we were somehow more restrained with groups/individuals who were weaker than us or outsiders. But hey, I suppose you never know. Edited to be sure not to distract from the actual thrust of the argument :)