lower balanced against circuits solving these problems gigantic class non-deterministic exponential time this class were which like it's possible that even neural Nets is one hidden layer could just solve the class so in pictures what we're saying is that suppose you know I'll give you just some arbitrary circuit well and there's some way to inspect this circuit and you can find an input which makes it print one whenever it exists yeah and the one extra thing I want to say is instead of taking say the exponential