Let us be open-minded. We do not know any objective age of our universe, or anything like the size of the cosmos entire, and that is expected not to end anywhere. Still, people work and explore the outer space. Knowing all about everything is not necessary.
When we begin to learn language, we realize there are great many words and language patterns. We do not need to know all possible words or patterns, to work out own language skills.
People who are very good at the language we are only beginning to learn, could not be specific on some matters, either. For example, nobody could give the exact number of irregular verbs. Some people would use 60, and some about 80 of those, and some people would change their minds.
We can use the lemniscate to symbolize what is indefinite, and we can come up with something logical, to manage language as a matter we do not delimitate on number, in words and phrases. Our logical thing will be finite. Language will remain non-finite. This is how we people have always been: we come up with finite things to manage matters we do not set bounds to.
We can associate the indefinite with the Simple pattern. Note as below covers the Simple in the Present, Past, and Future.
For natural language, we do not use the lemniscate in mathematical senses. The infinity symbol comes from ancient Greece. Earliest known records point to Anaximander of Miletus, who called the symbol apeiron. It meant "infinite" or "limitless".
For language, we do not use the plus or minus symbol, with the indefinite.
With other Aspects, we can just leave room for the verb. For us here, the association with the indefinite is strongest in the Simple.
It is in the Simple we can tell about things we believe true for the Past, Present, as well as the Future, as "Water freezes at 32 degrees Fahrenheit". We are indefinite on time, then. It is in the Simple only we could use absolutely all verbs we care. We become more restrictive with the Progressive, or Perfect.
Feel welcome to read: Time in the mind and heart.