I am reminded of a quote by Douglas Adams:
"I've come up with a set of rules that describe our reactions to technologies:
1. Anything that is in the world when you’re born is normal and ordinary and is just a natural part of the way the world works.
2. Anything that's invented between when you’re fifteen and thirty-five is new and exciting and revolutionary and you can probably get a career in it.
3. Anything invented after you're thirty-five is against the natural order of things."

I like to teach students that fake news has been around as long as people have been stupid and dishonest--that is, all of human history.

There are conditioning exercises my karate teacher and his teachers are . . . well, I'm skeptical enough to not risk them on my 40-something year old hands. Perhaps the microfractures that come from these exercises really do make the bones stronger, but I don't really need to break a board with a punch or backfist enough to find out.
But a lot of board breaking is psychological. The most common instinct is to bring your fist (hand, foot, elbow, whatever) right up to the board and then stop. You have to crash through the board and not care what happens.
Speed breaks, which is that the last quoted paragraph refers to, requires finely-tuned fast twitch muscles. They're a wonder to watch. My roundhouse kicks, on the other hand, are slow enough that I might as well be delivering them through ground mail.

We've been tinkering with nature since the invention of the plow. I'd say that it's turned out pretty well for us as a whole.

*bows* Thank you, sir. More rules per dollar.