There is nothing more interesting than the enigma of time. The future becomes the present, and the present turns into the past. Once the transformation is over, there is no going back.
In psychology, people talk about the specious moment, and there is a fundamental asymmetry to that. The duration of the present is usually described in milliseconds, but that is strangely insufficient. The essence of transformation would not be captured in milliseconds. We need other ways to describe the specious moment.
The key question here is to deal with the transformation in an explicit manner. The transformation is happening all the time, even as I write these sentences.
This morning I find myself in Washington DC. I just finished my breakfast. Some moments ago, I was waiting for the breakfast to arrive, and there is no going back to that recent past. The absolute nature of separation is one of the fundamental aspects of our experience, and yet we have not successfully described it.