Watches and Trains

He took a walk through the train. There seemed to be a number of people working fruitlessly on various projects. As he went back to his seat compartment he heard someone whispering. Absentmindedly he pressed some buttons on his watch. To his surprise, it sent what he was hearing to a journal in his lap. The speaker stopped, grabbed him and dragged him to one of the people he saw earlier. In front of him was a wall covered in motherboards, CPU's, memory sticks and various other parts. Again he pressed his watch and it began scanning the motherboards. Blue lights appeared on whatever the watch scanned. He went back and forth till everything was lit up. A phone rang. “Yes, we'll take care of it” he answered. A compartment under the watch opened up and a large disk popped out. It plugged into the activated wall and a 3d printer was assembled. The main part of his watch could now doodle on paper with two red beams. He passed it off to someone else. “We are a shipping and transport company” he said, as the train quickly became an undercover rolling base for spies. The band of his watch did it's own scan as he went back to his original compartment. “Something's not right” as one of 'his' people set off an alarm after being scanned. They started attacking. The fight wasn't going to well for his team. The watch band switched modes and scanned again. It displayed the next likely move the double agent would make, the team reacted and the watch vaporized the stunned assailant.

Temporal washback and polarization

By being in the past, the entire moment was being elevated to a different state. As soon as he left, the entire arrangement would collapse and it would be as if he'd never been there. Paradoxes were impossible, or very nearly so. In order for something to have a lasting effect, one had to continue to pour energy into it. Anything, or anyone so energized would have a temporal wake behind them that made them very easy to track, if you knew what you were looking for.

To go back in time and save an artefact, you would have to have to keep temporal wash-back at bay until it reached the time when you decided to go back and rescue it. Even so, such an object would essentially be out of phase until it caught up to the present moment.

Pump enough energy into something and it would create it's own pocket universe, similar to the one in which the original time traveller had created.

If time were pictured as not a line, but as a multidirectional 'area', such things could be understood to be nudged 'sideways' in time. Existing, but not perceptible. Something, or someone in such a state would create a time 'sink' which would have a 'disposable' past – in as much as it would be out of synch with everything else once the operation had ended.

This is where the issue of entanglement comes up – or rather anti-entanglement. Can something moved sideways in time be interacted with by the original time, in such a way as to not create a paradox? In other words, short circuit the causal nature of any temporal change by re-introducing the fix in a manner that does not disrupt the chain of events required to cause it.

Would it be possible to create a temporal double slit pattern where an event simultaneously does and does not happen and allow enough bleed through to indicate that further action must be taken?

Is is it possible to polarize time in such a way that a duality can be seen while it exists?