>What you seem to be suggesting is that you could write the program for a handful of relative frames, and then another program can use those results to produce something like an absolute frame.

I'm suggesting it's feasible - provided someone (a physicist?) would come up with a set of functions to use for the metric tensors.

>That's cool, especially because it can be computed on a grid to maximize chaos.
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>But in order to do that you need to come up with multiple sets of initial conditions, one for each observer. The point of this excersize is to over come that, to build a universe with a single set of inital conditions and a single set of rules that progress them.

You definitely want to read Greg Egan.