Godfrey: > I am not sure I can give you a decent answer to your > query [...]
There are papers by Mark Rubin showing (perhaps) that in the Schroedinger picture, information on splitting worlds must be inferred from *the history* of the combined system. While in the Heisenberg picture this information is contained in mathematical quantities associated with a single time. http://www.arxiv.org/abs/quant-ph/0310186 http://www.arxiv.org/abs/quant-ph/0209055 Rob Clifton in a paper on 'Phil. of Science' (circa 1996) appeals to the magic properties of the Schroedinger Unitary-evolving *Universal* Wave-function. (This approach seems to be similar to the concept of a global wave-function in Bohmian mechanics. John Bell pointed out a similarity between Bohmian mechanics and MWI, btw.) There are, imo, interesting ideas in the paper http://www.arxiv.org/abs/gr-qc/0507051 by D. Zeh. Mainly about the 'dynamics' of entropy within a 'world' vs. the rest of the 'worlds'. Needlless to say, all that seems to have something to do with what Hal Finney wrote here recently, in search of a *consistent* universal distribution. Regards, s.