For practical purposes, I will define this as follows:

Resolves NO if it is demonstrated that a physical process can in-principle be implemented which outputs (in a way such that the result is usable for further arbitrary computation) a non-computable number; further, the process, if carried out, must be of such a character that it demonstrates that our universe could not be simulated by a quantum Turing machine (e.g., it's inputs and specification must all be computable).

Resolves to YES if, e.g. it is somehow demonstrated with practical certainty that our universe is simulatable by a quantum Turing machine.

Such a physical process will still resolve the question even if it is not practical to implement for any reason not broadly understood as necessarily implying the impossibility of the process (e.g. if the process is unstable above 1e-100 K; something like 'it would have to be so dense as to collapse into a black hole' would be borderline).

Technicalities resolve at my discretion.

I reserve the right to refine any definitions at my discretion should the above statement be shown to me to be substantially ambiguous. If it should become clear that after such refinements the question is ill-defined, the market will resolve N/A.

Market has no automatic resolve-date.