[hider=Catchamber][quote=@catchamber] [hider=WilsonTurner] 1. Ah, I see what you mean now. An FTL morse code would be awesome, but I think entanglement ends when one side is altered. That would balance it, as particles need to be replenished and shipped. Fortunately, there are starships and wormholes. 2. Long story short, let's say the big bang made a bunch of wormhole pairs. They changed over time, and vary wildly. They could be kilometers to photons wide, with length contractions from 1k to 1 billion. They could be AU to light centuries apart, and heavily time dilated. I'd say most pairs are in the same system, as star motion would destroy or repel closing timelike curves. To maintain sanity, let's say they're irreproducible. Otherwise, good luck against micro-wormholes fueled by sheared targets/interstellar particles, [url=http://www.aleph.se/Trans/Tech/Space-Time/wormholes.html#6]empire-time wars[/url], and similar anomalies. 3. Then, it could be cosmic rays pushing against the scattering photon chamber, giving us a feasible reactionless drive. 4. For causality's sake, let's say FTL leads to alternate pasts. We could have warp ships, but the FTL cat will violently claw of out the metaphorical bag. I mean, a billion g gets you to near-light speed in seconds, and a million g nears c in minutes. This implies 1g drives are incredibly common, and would amplify space travel. But, what about ships limping from future wars? Or relativistic ships skipping light minutes, as they align their waste for collisions?[/hider] [/quote] 1. Quantum entanglement isn't that short-lived. I've read at least half a dozen articles and the like about making entangled particles, and there has been no mention to a short lifespan of the particles- and if they expired after first-use, and they were still difficult to create, then they'd be super expensive single-use pre-set messengers, which would be a terrible waste and no one would want it. No, I don't think entangled pairs are so short-lived. So a device to communicate via entangled pairs wouldn't be single-use, or short-lived use. 2. o.0 Coolio, that'll do. I dunno what else to say. 3. Yes! Agreed! 4. Well if we have portals that, say, lead instantly to its destination- such as maybe a energetic tunnel that shrinks distance from 100 lightyears to 1 AU, on that sort of scale, then it would be a relatively short trip, now wouldn't it be? And FTL, I think, would be [i]weird[/i], but the sort of FTL I'm looking at for this sort of setting is essentially instantaneous. I mean, even if you are going just super fast, it doesn't change anything, does it? When you get there, yes, time has passed, but it's not time travel or nothing. I mean, technically, you're slowing down time on a ship by going elsewhere, I get that, but... for the sake of simplicity, one is simply going there really fast. Interstellar FTL, that gets to other- You know, maybe instead of a literal FTL drive, perhaps there's a sort of alterverse, a dimension, layered over the normal space-time. Ever played Elite Dangerous? Something like flying in regular space, and then going into hyperspace. Activate a drive, open a portal, which takes you into a dimension where there are random 'energy' storms everywhere, where you can pilot yourself between systems easily. The more gravity and particles there are, the slower you go, at maximum. So going from system to system takes a couple hours, and feels like a couple hours. But flying in a system, near a planet, causes turbulence and screws up sensors and the like, and increases the chance of randomly being spouted into realspace. Or something? [/hider]