Starks make a lean use of cryptography we're only using light weight cryptography this means that overall for example the prover is uh easier to optimize because you can. The efficiency part obviously immediate it means impact I wanted to just bring back a little bit and and talk a bit more about comparison and how these things are actually constructed. Can you take the circuit of like let's take the zcash circuit and use a stark instead or are they incompatible or how does that compare? i think it's a really good question so um one of the core challenges and core magical attributes of the star is that the verifier nor no one on behalf of the verifier ever unrolls a circuit.