While talking about copy-and-paste coding I came across @codinghorrorJeff Atwood 's *other* Rule of Three, which is really interesting.
https://blog.codinghorror.com/rule-of-three/
It's making me think about the ActivityPub API and libraries for re-use.

The Rule of Three
Every programmer ever born thinks whatever idea just popped out of their head into their editor is the most generalized, most flexible, most one-size-fits all solution that has ever been conceived. We think we’ve built software that is a general purpose solution to some set of problems, but we
blog.codinghorror.com · Coding Horror
Link author: Jeff Atwood@codinghorror@infosec.exchange