To be clear, I didn't say "less than 1 out of every 100 lines", but in any case I don't consider yours to be a reasonable definition of "everywhere". Especially

To be clear, I didn't say "less than 1 out of every 100 lines", but in any case I don't consider yours to be a reasonable definition of "everywhere". Especially since such a low frequency doesn't support your claim that "you see runtime type errors too many times to count". Perhaps you're using libraries that are far, far below the ecosystem's average quality?