Time is neither objective nor subjective. It is the virtual existence of consciousness.

In other words, the time we know is not the time itself, but the virtual or hypothesis of consciousness, and our understanding of it is extremely insufficient. The world is moving, and we must have a reference to understand the movement. We use the motion between the earth and the sun as a reference to determine the concept of time. Although this has its own shortcomings, such as the earth's time is obviously not suitable in a larger system outside the solar system, it is already the best reference for people. With a virtual or hypothetical reference, people know the world. Although time keeps going, we can assume that it is still at a certain moment, so we can tell lies (assuming that there are universe α and universe β and they are independent of each other, human beings are in universe α and God is in universe β). Humans in the universe Alpha believe that the current time is April 2008, 14, 15: 10 minutes and 30 seconds. God β in the universe now uses a technology to change all the matter α in the universe back to 10 years ago. Because people are also made up of atoms, the thinking of living people dates back to 10 years ago, so people in the universe will think that the current time is1April 998 14 A.D. 15: 10 minutes and 30 seconds. But only God knows about it. ) such a hypothesis.

So the understanding of time is still very insufficient. After the virtual determination of the moving reference, time is still only a concept.