Have you ever thought of such a question. When you go somewhere, the return journey seems to be shorter and takes less time. Why? This is because we don't know the exact length of the mileage, but only estimate it through some other clues. When we travel to strange places, the way to go seems to be longer than the way back and forth. Because what we saw at the time was a series Fresh things. However, on the return journey, we only need to identify some road signs, rather than forming new memories. Therefore, the brain feels that the space is shortened and the time is shortened. The author intends to tell us through this text:. ['External stimuli affect our time perception.', 'Space affects our sense of time.', 'Time perception affects the length of our journey.', 'Time affects our sense of space.']