I found Scott Aaronson's explanation very helpful (and I'm a physicist, I think it might make even more sense to computer scientists and engineers). https://ww

I found Scott Aaronson's explanation very helpful (and I'm a physicist, I think it might make even more sense to computer scientists and engineers). https://www.scottaaronson.com/democritus/lec9.html https://www.scottaaronson.com/democritus/lec9.html