This is an interesting topic, and it needs to be expanded.
A competent example of describing a process without beginning and ending was created a long time ago.
On the stock exchange, we have a well-known and used indicator called the moving average.
When we apply it to price data using different time periods of the indicator, we see the full picture and trends.
Without a doubt, it can be used to describe any data that does not have a reference point.
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