I brought up once on a message board. Nothing that has matter can go the speed of light or it would have infinite mass. And yet light goes the speed of light. But photons don't have mass they said. But they have energy and energy is matter Einstein said, I said. Then they went off into all kinds of technobabble always starting with "Well, you're not entirely correct..." Bullsh*t. And. Temperature can reach absolute zero, time travel is possible and quantum realities are bullcrap too. Alternate realities exist until we perceive them? Then why don't we see them disappear? And I think you're talking about Santa Claus. Santa Claus fills my stockings until I walk into the room, then he vanishes. But at least I see him disappear.
Weapons have always been the most lucrative export, and the way empires are built, while academia has always been censored by the military, wealthy, and powerful. If academia had their shit together, we'd all be dead.
There was a farmer who couldn't get any eggs from his chickens and needed some professional help. The local veterinarian tried some things, but that didn't help. Then he asked a poultry specialist at the local college and he took the chickens to his place and played music for them, improved their diet, and installed special lighting. After two weeks there was still no eggs. Out of frustration, he went to the nearest university and wandered the halls until he found a professor (of physics) and he explained the situation in length to the professor. The professor made hundreds of calculations with differential equations on a white board. After finishing the math, he said " first, assume a spherical chicken . . . ".
Mass doesn't change, inertia does. E = γmc². As the speed of light is neared the mass of an object remains the same but it becomes harder to move. Light is made up of photons. Mass is the energy a particle has when at rest. Photons are never at rest in a vacuum and therefore have no mass. Why Do Photons Not Have Mass? (Simple Proof) Matter and energy are separate, matter has mass and occupies space. Mass also has energy associated with it. Mass has kinetic energy if it is moving in space, the faster it moves, the more energy it has. In relativity theory the mass of an object and its associated energy appear to change when viewed from different frames of reference. Absolute zero can not be reached as per the third law of thermodynamics. It is the point at which no motion is possible by any particle. Time travel is possible, but usually only in one direction. Alternative realities are, at present, only theories.
The information in the system is the actual issue, and the information in the mass remains the same even if it gets hotter, but it becomes increasingly difficult to tell what is mass and what is energy. Think of a radio being swamped by static. Photons have angular momentum and have their own slight impact on the shape of spacetime. In contrast, 80% of our mass is our protons, consisting of three quarks in an elliptical orbit at the speed of light. Hence, we have gravity because we have inertia, and inertia would be meaningless without gravity. Again, the issue is efficiency and dimension squeezing. Photons are humble and don't normally experience the passage of time, red shifting rather than experiencing time, conveying all of their energy and information with perfect fidelity and efficiency, but that means just 100% efficiency. Information itself is more fundamental than energy, which means the information itself they convey can be faster than light, in cases like quantum superposition. Electrons and other particles can all teleport all over the place, and quantum systems can be up to 125% efficient, while you can slow photons down to a crawl and make them behave like a liquid. They all obey nonlinear temporal dynamics that are heavily classified and censored.