Here's a thought.....
Second Law of Thermodynamics: In any cyclic process the entropy will either increase or remain the same. Entropy: a state variable whose change is defined for a reversible process at T where Q is the heat absorbed. Entropy: a measure of the amount of energy which is unavailable to do work..
Although entropy does increase with disorder, it is not disorder, but the measure of the energy in that ordered or disordered state. The relationship is intimate but they are not the same. Just as time and space are similar but not the same, nor is there an arrow of time, it is a Mobius strip. Three physical dimensions while time has three probabilistic dimensions coexistent in one physical space which we perceive as the present. The present is an eternally permuting instant, where determined past probabilities organize unlimited future possibility into reality, into the now. The past, present, and future, are not a line or arrow but a “point”, perhaps a tachyon or maybe THE tachyon. There is no physical place called the future, nor physical place called the past.
Entropy is the opposite of quality in measuring the amount of energy available for work. The transition from one maximum state to the other is how we define the arrow of time. But as the entropy of the universe increase and its quality decreases with expansion, dark energy appears to get stronger, or at least maintain it strength in comparison to the lowering of the universe’s energy. Perhaps they have an inverse relation. Perhaps instead of thinking of the “arrow of time” as a finite arrow, we think of its as rubber and twist it into a Mobius strip, an infinity symbol. Perhaps the universe’s energy reaches a maximum in entropy just a dark energy reaches its maximum in quality, like one flowing back into the other through an undercurrent. Then as one universe reaches energy death, anther universe with maximum ordered quality is born. Then the old would in essence feed dark energy into the expansion of the new, continuing the cyclic process forever without infinite expansion or need for a beginning or end, just an empty infinite expanse of infinite duration for it all to expand and contract within.
Also, if the effects of time slow as you approach light speed and stop at light speed, then those effects would reverse beyond light speed. The clock would reverse but you would remain in the physical present. There is no physical past to travel to. Even if there was, all of physics runs backward. Or, at the very least, your body would. You would try to undigest your food, inhale CO2 and exhale O2, and see the light receding from your eyes. Your body would try to get younger, to reverse its growth back to a single cell. You likely wouldn't live long enough for your misfiring brain to work out how to ask what was going on. Travelling into the future is a perceptual trick where you attain near stasis while remaining in the present. You just skip ahead in memory having essentially been in a coma for the duration. There is no physical future to go to. Time travel is an impossibility.
The future is unwritten but it does have a trajectory based on realized possibilities. Like the weather it can be modelled and predicted to a degree of accuracy dependent on intuiting or knowing all the variables and probabilities involved. A psychic might intuit certain of these while a god would have broader, deeper, more certain knowledge and intuition.
The Phoenix Universe/Cosmos would consist of three existential "layers":
- The Current defined by probability or certainty
- The Quantum Foam defined by uncertainty and universal possibility
- The Undercurrent defined by unpredictability or randomness
Sorry Doc, you're not a time traveller, you jump from universe to universe. alternate reality to alternate reality. You are a cosmos lord.