Believe it or not, back in the mists of time we had these things called “public institutions” which were at least notionally chartered to, and in fact somewhat did, act in the public benefit.

The BBB was one of those — not always perfect, but consumer-friendly and not out to scam or profit. Yelp is just another VC-backed money play. They do not now or have they ever claimed or intended to make the world a better place without regard for their own profit.

You can teach a kid to change a tire without saying a word. It’s the same thing. Rats are very smart and very social. Rats that were good at teaching Rathood to their little ones had more that survived.

Put food in a maze and I’m sure rats would teach other rats how to get it. I expect this is similar.