And .........
If mental states are functional states—and if mental states are capable of realisation in vastly different kinds of materials—then there is some reason to think that it is an empirical question whether minds can be realised in digital computing machines. Of course, this kind of suggestion is open to challenge; …… http://plato.stanford.edu/entries/turing-test/#LadLovObj
Surely it is open to realisation and virtualisation. What then would be the challenge?
Do you imagine choice being freely available from virtual machines/analytical engines/discrete continuous-state machines? Hmmm…. Novel and Beautifully Dangerous and Exciting too.