It's Kipling's law of the jungle, which reads the same forward and back:
"the pack is the strength of the wolf, and the wolf is the strength of the pack."

I think it's analogous to how we Earthlings don't just rely on abstract logic to reproduce our genes, but instead have strong, inbuilt, irrational urges that drag us in that direction whether our reason think it wise or not. We can work around it, we can rationalize our actions, but it's still lurking the in the bottoms of our brains.

Having a tribe that will join together to defend you is a huge deterrent to an attacker. Unless the atracker can manage to isolate their target and sever their social bonds. (E.g., abusive relationships, and the discussion of slavery in "Debt: the first 5000 years".)

Them's my two cents, anyway. :-)

This was great! With one odd exception, it told me exactly which stories were April Fools' jokes, and let me ignore them when I wanted, and laugh at them when I wanted. Please do this again every year! (But yes, you may want to triple the encryption strength...)