When you come into contact with the scene of seeing something, your nerves will tell your brain whether this scene is the first time. They are responsible for memory analysis. Sometimes memory fatigue occurs and you will have a short rest. At this time, it is similar to laziness, so it is not directly transmitted to the brain through division, so the brain thinks it is familiar. Actually, it's just a little joke played by the memory nerve. This kind of nerve fatigue is a normal phenomenon, so you don't need to care too much. (adopt it)