It seems that no matter how many times I look at, or write about a subject; never is it exactly the same. There is never an exact copy of a previous effort. No matter whether the effort is extreme to replicate or not; there is no exact result. There can be major similarities, but nothing can ever be an exact replication. The first reason why: is that time, has passed; and no-thing ever stays the same. Change is the rule in time. If there were no change in matter, there; would be no time and its existence or passage. On a large scale example, consider the Earth in our galaxy. Think about trying to bring back and relive yesterday. Or examine a page you wrote in a notebook yesterday; and try to rewrite that page you just wrote. Or try to re-breathe that breath you just finished breathing.
The point is; what I wrote; or what I just read; is never exactly the same; as what occurred that previous moment. So the view is a slight bit different; the idea is slightly different, and therefore the result; and though perception; an image considered; by consequence; is different. There is as a result; no repetition; time will not allow there to be a state of no change. Matter cannot allow there to be repetition. There is no such thing as exact repetition. The Mayan calendar is based on the cycle of the Earth in its location in orbit in our Milky Way galaxy. Every pass around the galactic disc is roughly estimated to be 26,000 years, give or take a few thousands of years. The time is variable; but forward progression is a sure thing. It is a one-way cyclic expression of change; we are on the Earth Express; and life is change. Matter is the result and evidence of that change, and gravitation is the mechanism of assembly of that evidence. Light is the creator; water; is the lens; of creation.