It’s one thing to speculate whether time travel (whether for humans or robots, etc.) is theoretically possible, and another thing entirely to speculate if humans could ever get to a place where they could create such technology in the first place at all. After all, humans are led by attachment, aversion, and ignorance. This is why we have so much war, conflict, and so on. Just look at this thread for context:
The Ancient World, which had trade routes spanning thousands of miles without which it’s societies could not have reached the heights they did, collapsed in 1177 BC and we enetered a dark age. Rome collapsed in 476 AD and we enetered a dark age. Every empire has collapsed. Because of complexity meeting our attachment, aversion, and ignorance, if we are highly dependant on each other due to trade, our civilizations will collapse. Creating such technologies necessitates being in collaboration for very long periods of time as a necessary prerequisite to develop the necessary knowledge, store it, develop technologies, etc. Why should we entertain the idea that society could ever collectively get to such a point before resetting itself again? To me it is just as fantastical as speculating about time-travel itself, imo. But it is usually only historians that don’t think that “Star Trek is next Tuesday”.
In sum: I doubt we’ll ever make it there.
That said, I am enjoying the discussion.
R