Derail, but this right here is the key to debugging superpowers. I can't even count the number of times I have amazed juniors with my genius when all I did is read them the error message and ask them under what circumstances could that be true.
A corollary that's just as important is "believe the error messages - they are telling you the literal truth." Hard to believe how often we implicitly disbelieve what the compiler or runtime is telling us.
