The laws of physics can’t be seen, only the effects. Basic statement, but bearing it in mind, I propose two more laws. A, (0 is impossible) B, (1 is impossible). And the effect of these negative laws is to produce the universe.
(-) (-) = (+). This instant is eternal as there is nothing to measure. But the (+) gives rise to the positive laws of physics, which state that for every action there is an equal and opposite reaction; therefor (-) (-) = (+) & (-).
The existence of (+) would manifest as an infinite static charge, and the attempt of (-) to exist within this charge would create conflict throughout. The effect of this conflict throws out the first sub-atomic particles, creating mass, movement, and therefor time.
(-) (-) = (+) & (-) <=> D/S = Time
The conflict is eternal, so there is no big bang, only what we suppose is an explosion from the physical side of the equation. The universe is a perpetual motion engine producing time.