The Non-Computable Effect in Physics

Penrose: If we can build an AGI using chemical processes that are equivalent to biology. It wouldn't stop us from building an AGI and it wouldn't really invalidate the heart of the Turing principle. Penrose uses Deutsch is one of Deutsch's papers to explain what he has in mind when he's talking about a non-computable uh non-comutable effect in physics. He gives an example of one from Deutsch actually that that may actually exist but I don't think it buys him anything for his other arguments.