I agree with this. Lots of aha's come from "hey why isn't this working", digging into library implementations or system internals, and figuring it out. It's s

I agree with this. Lots of aha's come from "hey why isn't this working", digging into library implementations or system internals, and figuring it out. It's stuff that's annoying at the time because you're working on something else, but each time it happens you learn more about what's going on under the hood. And eventually you realize these things you picture as dark arts are actually pretty straightforward, and roughly how you'd have guessed they were implemented if you'd thought about it hard enough.