you've got a circuit with that many inputs okay so for each end you have a circuit C sub n that's going to bring you on on inputs of lengths in and so it's obvious what I'm going to do and I want to compute something I'm you give me an input I measure its length I feed it to whatever the circuit is in the collection that matches that length as I run it it gives me some answer okay that's how the circuit family would compute on on some problem that would normally be solved by now okay all right so in this model the circuit family