John Archibald Wheeler was a famous physicist
It has been stated that he thought that there was a strong connection between undecidability and quantum physics
This idea was given an early formulation by Wheeler himself: in unpublished notes to a discussion held with, among others, Roger Penrose and Simon Kochen, he identifies the point of origin of the ‘quantum principle’ as the undecidable propositions of mathematical logic
But then, this same physicist proposed that the universe was similar to a computer and that reality emerged as digital informational processes in form of bits (It from Bit): https://en.wikipedia.org/wiki/Digital_physics
As far as I know, digital physics models cannot be undecidable. They must be decidable (If not, we could never construct an algorithm which would get a correct answer to a yes/no question)
So, what is happening here? Did Wheeler change of mind?