Quick test.

Pick something you think you understand well.

Now imagine you have to explain it to a 12 year old, out loud, with zero specific vocabulary.

Did you get stuck at some point?

That's the exact spot where you don't actually understand it yet.

This is one of my favorite tools for finding the holes in my own thinking.

Below, I re-share the full collection of such tools.

(Part 1/2)