@inkican Going back in time would require more energy than is available in the universe, for going faster than the speed of light, which is impossible. That's the basis in the theory (should be called 'law' by now) of relativity.
Backwards time travel would obviously interfere with causality in creating an alternative past, which would lead to a different present. So it's a good thing that it's physically impossible, despite what a desperate astrophysicist believes.
The idea is that you can go backwards in time by going faster than light. The speed of light is actually the speed of information itself - so if you could go faster than that, you’d be going backwards in time.
However, Einstein showed that nothing can accelerate to the speed of light. You’d need infinite energy to actually reach the speed of light, and infinite energy is assumed to not be possible.
I wonder if there is a meaningful difference between your example, and the technology with which the JWST uses to view light in the past. Rather, if the later is something we can use for time travel ;)
Good for you commenting on the title alone! If you looked at the actual article you would know that one of the limitations is, that the furthest point you can reach going back in time is when the “time machine” was first activated.
Mallett’s vision for a time machine centers on what he calls “an intense and continuous rotating beam of light” to manipulate gravity. His device would use a ring of lasers to mimic the spacetime-distorting effects of a black hole.
Can only go back to when you started operating the device. So, basically the Primer time machine, except the math says it has to be done at galactic black hole amounts of energy sort of scale.
I sincerely hope so. The later seasons weren’t perfect, but they were still interesting enough to leave me wanting more, and to have it just unceremoniously cut off stings pretty badly. Real Netflix move.
Good. I didn’t care for season 3 when I watched it, but then I watched season 4. I can see where they’re planning to go in season 5, and how season 3 is a dull but necessary part of the buildup. I think season 3 really killed a lot of momentum, and thus a lot of the hype, but I’m very willing to give season 5 the chance to bring it all together.
Season 3 made season 4 harder to watch. Season 4 was better than 3 but it also felt kind of... I'm not quite sure the right word. Diluted? Or maybe the other direction as a Flanderization?
Most of my issues were the pacing and the attempt at making the show feel heavy, but it ended up not quite hitting the marks for me.
I loved the first three seasons, the last one was pretty bleak and depressing but I definitely wanted to see where they were going with it, I hope they get to finish it.
Not sure if you watched up to the end of season 4, but it ends on a cliffhanger. They were building to a final season that would answer the “Can humanity and AI coexist in the same world?” question that the series had been asking since the beginning.
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