I have the idea (it is incomplete, and does have some gaps) that the Universe periodically resets itself into a state of minimum entropy, which we call the Big Bang.
The Second Law of Thermodynamics is (in part) a result of statistics and chance dictating that the kinetic energy of randomly moving particles sort themselves out into a situation where there is less and less of a temperature difference between the different parts of the closed system.
I view this like a deck of cards that is randomly shuffled.
However, if we keep shuffling a trilllion decks of cards together and dealing out a trillion poker hands for an infinite amount of time, then it is 100% certian that I will deal out a trillion royal flushes a trillion times in a row.
This will happen very rarely, but people misinterpret the definition of infinity, as many people think of it as a very large number when–in fact–infinity is an endless number. One trillion is precisely as close to infinity as is the number 1, because one trillion lacks the quality of endlessness that defines infinity.
This means–at least to me–that a Universe in maximum entropy that exists for an infinite time will–very rarely–have the random movements of its particles randomly sort themselves into a state of minimum entropy, which we call the Big Bang.
This idea is consistant with the First and Second laws of thermodynamics, it eliminates the need for a God or gods, and it closes the loop on infinite regression into the past and infinite progression into the future.
There are problems with this idea, as Get Off My Lawn has pointed out that if I want to consider this fluke of statistics, then I must consider all flukes equally if I don’t want a subtle double-standard . . . and some of these flukes could–perhaps–cause the Universe to vanish into non-existence, and leave behind a true nothingness (which I equate with the empty set in mathematics, not to be confused with the number zero).
Also, my idea does not explain dark matter, dark energy, or why the expansion of the Universe may be accellerating.
I would also expect all of the galaxies of the Universe to look like they are organized on the surface of a Universe-sized sphere (because mass of the Universe is accellerating outward equally from a tiny starting point), and plainly this isn’t the case.
Also–most important–my idea cannot be falsified by any way that I can imagine, so my exercise in “do it yourself cosmology” may have the same credibility as the claim that “God did it.”
Still, I feel that my hypothesis is useful–at least to me–because it can show me where I deceive myself when I want to believe something, as I have been obsessed with this idea since I was 15 years old.