a) Penrose has probably made a lot of claims over the years. I may be thinking of earlier writings than you are. b) Proofs tend to be a garbage-in-garbage-out

a) Penrose has probably made a lot of claims over the years. I may be thinking of earlier writings than you are. b) Proofs tend to be a garbage-in-garbage-out sort of thing. It's best to check the output against your intuition because you may have made a mistake in your reasoning or, more likely, in your assumptions and definitions. Intuition is not fixed and immutable: you can develop it to include things like quantum mechanics, probably.