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One well known physical concept, that behaves closet to the concept of time, is the concept of entropy. Both universal entropy and universal time, spontaneously increase, adding change and variety. We can't go back into time, any more than we can put the Genie back in the bottle. The concept of time travel is limited by entropy, since no machine is 100% efficient. This means we can't reproduce a different time, since we will add some entropy, altering that time. That being said, consider the period at the end of this sentence. If we were to magnify that period, what first appears to be symmetrical and uniform to the naked eye, becomes more randomized and pixelated as we zoom in. As space-time expanded and magnified the original singularity, the singularity becomes pixelated; entropy increases. The BB singularity begins with essentially 0+ entropy. Expansion increases the entropy and causes time to begin; change, since the two affects run parallel. In my educated opinion, after looking at dozens of options, I have inferred that best model has the speed of light as the ground state of the universe. This can be easily inferred from the observation there is a net conversion of matter to energy in our universe; inertial to the speed of light direction. According to Special Relativity, in a speed of light reference, the universe will appear like a point-instant; the period at the end of the sentence. Since the entire inertial universe will appear overlapped as a point-instant, if one was in the C-reference, they can be in all places in the universe, at the same time; omnipresent. No movement is necessary to be everywhere in the universe, at the same time, due to the point overlap. One way to model this state of omnipresence in the inertial universe, as seen at the speed of light, is the inertial fabric of space-time separates into separated threads of time and separated thread of space. If we follow a thread of space, that is separated from time, we can be anywhere in the universe without time. If space-time was separated into independent threads of space and time, at the speed of light reference, both time and space could act independently of each other. This would give the universe infinite entropy. In other words, there is no combination of space and time that can't form, at the same time. It would be a continuous state instead of a quantum state. To form the singularity for the BB, we need to lower infinite entropy. We live in a quantum universe, which defines finite entropy by default. A decrease in entropy will release potential, from which the singularity appears. The trigger for the entropy increase; expansion, is connected to the conversion of energy, into mass. Energy can travel at the speed of light, but mass cannot, according to Special Relativity. A condensation of energy into mass/matter implies the period at the end of the sentence, has to expand reference from a point. Energy can overlap as waves but matter cannot occupy the same space. There is increase in entropy and time begins.
How did time begin to "Flow" out from the Big Bang Singularity?Gravity and mass were infinite at the moment before the universe emerged out of the Big Bang, when as far as I know gravity was infinite, which should have halted time and kept it in check forever?Alan
Surely time had to come first else without it there would have been no big bang eh ?