(January 25, 2015 at 11:26 am)Alex K Wrote: My two cents about the relativity example: while the amount of time that passes depends on the reference frame, one can know the time that passes as seen from another reference frame. There are then "absolute" truths in relativity, you simply have to ask the right question. How much times passes: wrong question. How much time passes in the reference frame A? Well-defined question with a universal answer that is true in every other reference frame.Are you sure? In the hypothetical example that you were a photon, would there be any way to determine the lengths/time rates of anyone in any other reference frame? How about if you were in a black hole?
Quote:In a similar vein, I wonder whether you don't automatically recover universal truth again simply by acknowledging the "frame" dependence of certain truths in the widest sense, and by asking the correct question.Okay, let's take the desk example. What is the universal truth: that it is mostly empty space, or that it is a solid object which completely fills a given volume? Should I say the QM level is the "real" level, and that my desk experience is a supervenient property? Or that it's an illusion based on the course observational capacity of the human senses?
How would you go about extracting universal truth from these perspectives? What is the key to relativity if scale is considered an axis or dimension?
