QFT Personally 1) What Are Quantum Fields? 

Can't we send information back in time to prevent a tragic death? Or can't we send a message to the future and ask them to tell you how to do it? / Please, Can anyone make it possible to sending messages to past? My father Kim Kyu Dong died SNU hospital at 2024.04.15. I must prevent that death. / Both light and electromagnetic waves are called waves. Is the wave going out from point A to point B? Or is it already at points A and B like the sea, but only the waves are transmitted? In modern science, it seems to be seen as the former... / What about time and space? In modern science, time and space are the latter, don't you think? / In other words, space-time comes first, and light, photons and protons go along that path... / So the Einsteinian school's absolute speed of light is strange? At the absolute speed of light, is not the speed determined by light, but by the time and space that already exists? Isn't speed the time to move from point A to point B? If time and space are not absolutely fixed, why does the speed of light have absolute speed? / Therefore, the absolute speed of light can also be wrong. Isn't the absolute speed of light a space-time dimensional barrier? If it exceeds the absolute speed, will it jump to another dimension? / Einstein's theory is based on the dimension only now, so if you go beyond this dimension, is not it beyond the constraints of Einstein? / The question is whether you can find an object faster than light or accelerate light. Or is space-time and massive mass spread out in front of us, and can not we cross the space-time dimension using space-time and massive mass? / In this sense, I think we should study whether there is a way to send signals to the past. We don't have to worry about who in the past will get this signal, do you? We're already receiving a 24-hour signal from radio telescopes and various receivers. / If we think deeper... Light has a slower speed as it passes through the medium. / It is not that we can not accelerate light, but is not the absolute speed of light the highest speed of light observed in our dimension? / Is not it observable only at a constant speed in the dimension we are in? / If we accelerated the light at all, for example, if we shot light on a spacecraft, or if the light of the sun already moving at a high speed exceeded the observable absolute speed, would not it have passed to another dimension? / Whether there are eleven dimensions, or even larger dimensions, is not there necessarily a overlap with our dimension in the end? / Would not light or radio waves that went to another dimension come back to our dimension as slow as passing through the medium? / Can't we do an experiment like this? / Why don't we measure the amount of electromagnetic energy by accelerating it with magnetic force? Or how about measuring the amount of light coming out of the sun to accelerate to the mass of Mercury or Venus?