an answer for you all right okay so so proving limitations on what circuit families can compute is a step towards a non asymptotic complexity theory a complexity it doesn't talk about polynomials or Exponential's or whatever when have you talked about numbers how big does the computation get if I want to run it and if I want to run it on inputs of length a million can I fit it inside the known universe so so concrete limitations on computing within the known universe is would be is the the thing you would like to have that's sort