John Carlos Baez on Nostr: Have you ever tried learning physics from a teacher who does calculations without ...

Have you ever tried learning physics from a teacher who does calculations without explaining them well? Setting constants equal to 1, then putting them back later using dimensional analysis. Setting terms equal to zero when they're negligible - which you're supposed to know by instinct. And so on. You're just supposed to watch it and pick it up.

It's like trying to learn gymnastics by watching Simona Biles.