one program during low so if you got a program that runs and say T of n time when inputs of length n so in the squared time then it's well-known that you can always get a circuit family that will do the same thing and it has about TN in size as well there's some extra little factors don't see it in size so you can simulate efficient albums with efficient circuit families okay so time will scale the size all right so so that's all fine good in fact if you flip random coins in your algorithm and it gives you the right answer with high