If you have a UDA inside a physical universe, there is real physics (qua physicalevents) outside it, and there is a real study of physics outside it as well. What goes on in a virtualised environment is not real. You could feed virtualised people false information about the past, but that would not be rewriting history (in the sense of changing the real past) and it would have not mean that the virtualissed people had some valid kind
of history qua study of the past) either, since it would not be based on true facts. Likewise, their "phsyics" would not really be phsyics , because it would not be based on the only real phsyical reality, the one in which the UDA is embedded. There is no particular reason to think that phsyics (qua study) that is baeed on false information counts as physics in the true sense of the term. If "physics" *means* the study of what is ontologically fundamental, then what is going on in the UDA can only be pseudo physics. On the other hand, if "phsyics" just means "investigation of subjective phenomenology"" then the argument goes through -- but only because that particular definition of physics is doing the heavy lifting. It isn't difficult to prove that physics isn't about objective reality if you have started with the assumption that it *is* about subjective reality. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/everything-list?hl=en.
