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Subtitle: or, everything that will go wrong when you freeze time. ----- So recently we got a new gimmicky third person shooter game called Quantum Break, where the main character can manipulate time to do some fancy tricks. Most notably it has areas where time stops completely, or playing itself in a loop and our character can use the environmental objects trapped in time to advantage by releasing a frozen object to play in the loop or freezing an object mid loop, such as releasing a frozen car mid crash so it flies into enemies, or freezing something looping around in mid air to be used as foot hold to travel around. Now that's enough about the game, I only mention it because that game reminds me of something I have always wonder about the time stop situation, in that, how physics works in such an environment. Of course this has no bearing on the real world that we know of, but it is fun to think about scenarios. Ignoring why or how time suddenly stop, I wonder what happens when, say, a person is capable of moving around freely in such an environment. What happens to light, for example. If time stops, suddenly, all photons in the air will be suspended as well. How would a time traveller in such environment see? They would only be able to see as long as they move forward, but as soon as they move backward, no light will hit their eyes and suddenly the whole world is black for them. And then air as well, if no air molecules enter their lungs because they all freeze up, the time traveller would be choking right where they stand, and thus must be running to catch all the air they could. And then I wonder about forces such as momentum works. Does the time traveller impart force on objects suspended in time? Will there be inertia? What happen, if say, the time traveller takes an object, and push it for a distance, and then time resume? Would all the momentum builds up in the object be released all at once? Also compression. If all the atoms in the air is frozen in time, would the time traveller, by merely moving, compress them together to the point of fusion, because they are essentially moving faster than light? Every movement would trigger catastrophic explosion as soon as time resumes, wouldn't it? I am sure there are more things that might go wrong in this time stop scenario, but I don't have enough physics knowledge. Any of you have other ideas?