On Wed, Oct 31, 2007 at 05:11:01PM -0700, George Levy wrote: > > Could we relate the expansion of the universe to the decrease in > measure of a given observer? High measure corresponds to a small > universe and conversely, low measure to a large one. For the observer > the decrease in his measure would be caused by all the possible mode of > decay of all the nuclear particles necessary for his consciousness. > Corresponding to this decrease, the radius of the observable universe > increases to make the universe less likely. > > This would provide an experimental way to measure absolute measure. > > I am not a proponent of ASSA, rather I believe in RSSA and in a > cosmological principle for measure: that measure is independent of when > or where the observer makes an observation. However, I thought that > tying cosmic expansion to measure may be an interesting avenue of inquiry. > > George Levy >

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There is a relationship, though perhaps not quite what you think. The measure of an OM will be 2^{-C_O}, where C_O is the amount of information about the universe you know at that point in time (measured in bits). The physical complexity C of the universe at a point in time is in some sense the limit of all that is possible to know about the universe, ie C_O <= C. C is related to the size of the universe by the equation H = C + S, where S is the entropy of the universe (measured in bits), and H is the maximum possible entropy that would pertain if the universe were in equilibrium. H is a monotonically increasing function of the size of the universe - something like propertional to the volume (or similar - I forget the details). S is also an increasing function (due to the second law), but doesn't increase as fast as H. Consequently C increases as a function of universe age, and so C_O can be larger now than earlier in the universe, implying smaller OM measures. However, it remains to be seen whether the anthropic reasons for experiencing a universe 10^9 years and of large complexity we currently see is necessary... -- ---------------------------------------------------------------------------- A/Prof Russell Standish Phone 0425 253119 (mobile) Mathematics UNSW SYDNEY 2052 [EMAIL PROTECTED] Australia http://www.hpcoders.com.au ---------------------------------------------------------------------------- --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---