> > In theory a computer should be able to model any physical process
> Wait, which theory is that?
The Church-Turing-Deutsch Principle. (Which isn’t a theory in the empirical sense, but somewhat more speculative.)
> Or are we suggesting that you can build a computer out of whatever physical process you want to model?
Well, you obviously can do that. Whether that computer is Turing equivalent, more limited, or potentially a hypercomputer is...well, Church-Turing-Deutsch says the last is always false, but good luck proving it.
Wait, which theory is that? In church turing theory the computer can compute any computable function.
Why do we think that the computer can model any physical process?
Or are we suggesting that you can build a computer out of whatever physical process you want to model?