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Jun17-11, 07:30 PM
Sci Advisor
PF Gold
P: 5,083
OK, here is my perception of the photon view of existence. The photon does not live in spacetime at all, or a manifold, or any set with any type of metric structure (no measure of distance or time exists). It lives in an ordered set of cardinality aleph-c, consisting of the events from its emission to its absorption. The order is causality order.