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cybis32013 karma

Hi Max, many ideas explored in your book are centered on the concept of infinity. E.g. The idea that there are infinite copies of you in an infinite number of universes, etc. But towards the end of the book you say that infinity is incompatible with the idea of a mathematical structure. You hint there might be a fine granularity to reality. I've probably misunderstood something, but isn't there a contradiction there?

cybis3202 karma

Thanks for the reply, Max. If reality turns out to be granular, then there aren't infinite copies of us, correct?

cybis3202 karma

Probably something to do with: 'The Planck length is, in principle, ... , the shortest measurable length' http://en.wikipedia.org/wiki/Planck_length

cybis3202 karma

The effect is explained in detail here (yes the man will appear to grow old faster as a function of their closing speed): http://en.wikipedia.org/wiki/Twin_paradox#What_it_looks_like:_the_relativistic_Doppler_shift