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Isaac Arthur has put it in a way that resonated with me. If you live in a universe that has FTL, it’s scarier in a lot ways. It means the really dangerous bad g
by anomaloustho 11mo ago
Isaac Arthur has put it in a way that resonated with me. If you live in a universe that has FTL, it’s scarier in a lot ways. It means the really dangerous bad guys in the other galaxy can reach you. If you live in a world without FTL, it makes things happen really slowly and over generations. That’s not as fun and exciting, but it also severely limits the amount of bad guys that can get to you.
And any bad guy that can even reach you basically means you’re already dead if they so choose.
- arethuza 11mo agoDoesn't FTL also imply time travel - which probably isn't a good thing?
- cryptonector 11mo agoNot really. But it does imply weird things. Sabine Hossenfelder did a video on this.
- lawlessone 11mo agoI think wormholes and warp sort of get around it by having the FTL traveler moving slower that light in their pocket/hole through space.
- cryptonector 11mo agoSPOILER ALERT: Wormholes and warp drives will not work, cannot work, are not physically possible (even though they are "solutions" to the EFE), would not be feasible even if remotely physically possible.
- analog31 11mo agoFTL means the bad guys have already reached you.
- cryptonector 11mo agoIt means you see nothing interesting then a shockwave and here they are.
- analog31 11mo agoAnd here they were, because FTL travel implies eliminating the distinction between "before" and "after."
- cryptonector 11mo agoNot really: https://www.youtube.com/watch?v=9-jIplX6Wjw&pp=ygUKc2FiaW5lIGZ0bNIHCQkHCgGHKiGM7w%3D%3D https://www.youtube.com/watch?v=9-jIplX6Wjw&pp=ygUKc2FiaW5lI...
- analog31 11mo agoAdmittedly, I'm in the awkward position of being an old industrial physicist, so on the one hand I'd need an explanation with a bit more substance, but on the other, it would probably be over my head. The most I was able to get from the video is that maybe quantum gravity will crack the problem.
- King-Aaron 11mo agoThere is also some folks that suggest that they are already here. Including an awful lot of high profile people within the defence sectors.