The Present as a Field of Perception: Notes on Micro Phase Difference Dear Helena, I have been thinking about the nature of time and perception. What we see is actually the past. Without light, we cannot see anything. Every image we perceive arrives with a delay determined by the finite speed of light, yet we call it "the present." The landscape before us, the people around us, and even the Sun itself are seen through light that carries information from the past. The sunlight reaching Earth left the Sun about eight minutes ago. In the same way, the Sun receives light reflected from Earth with a similar delay. Since light travels at a finite speed, every observation contains a phase difference in time. Even an object one meter away is seen approximately 3.3 nanoseconds in the past. The delay is extremely small, but it is never zero. For this reason, I wonder whether existence and recognition are inseparable from phase difference. Perhaps what we call "now...