Quick theory for you folks to knock down... Laws of Thermodynamics: 1) Energy is conserved, 2) As time passes, energy tends to be located in increasingly complex masses. Implications: Matter and energy are essentially the same thing; as time progresses, the universe consists of less 'pure' energy and more energy in the form of matter. Logical conclusions: The universe began as pure energy and will end in pure matter ('heat death'). Add in quantum mechanics: 1) Energy only has a location when 'observed' (where 'observed' means any contact or association with any other photon). Therefore, Before the universe there was only pure energy in some kind of non-uniform distribution; once photons began 'observing' one-another, they coalesced into matter, instantaneously creating massive coalescence, or 'big bang', and the beginning of time. The universe will end when time ends, which will be when all energy is locked into matter. Phew! That is the best I can do. Any ideas??