[quote=@catchamber] I mean weaponized holograms based off [url=https://www.youtube.com/watch?v=AoWi10YVmfE]femtosecond lasers[/url], but I understand. Maybe something less invasive would spread faster, like [url=https://www.youtube.com/watch?v=hLjxMjBlB9k]wearable neural interfaces[/url] translating thought into audiovisuals. As for quantum entangled cybertelepathy, I'd say we could do without any instant FTL effects. Lest we worry about the likes of predatory dyson swarms, and that'll quickly escalate into star-busting. While quantum mechanics provide decent options, I'd like to keep their scope limited. For example, graviton engines are nullified in steep gravity wells, wormholes are varied and volatile, and alternate yous are more likely to be in virtualities than realities. Glad to have your interest. [/quote] 1. Femtosecond lasers o.0 Damn, never heard of those. I'm gonna go look into that 2. Wearable neural interfaces and dyson swarms Personally, I'd get an implant if I could. Other people might feel differently- but quantum physics is something studied today, and we know of quantum entanglement today, so it's certainly possible that it could exist when we have weaponized femtosecond laser weapons. Governments and such would definitely use quantum entangled implants in agents- both to activate some kind of self-destruct in the case of sensitive people being taken by the wrong person, or for communication between agents that can't be detected, and simply for ship-to-ship communication in the vastness of space. Conversations would be very slow when calling a moon base, a Mars base, a Ceres base, or a starship between those- communication via quantum entanglement would be sought after. And it's not really FTL- it just [i]is[/i]. In order to be FTL, it'd have to be able to travel, and we can't tell how entangled pairs work, so we don't know if there IS something that travels between them. I also don't see where dyson swarms come into the equation. Sun-collectors from quantum entanglement? Maybe for communicating and controlling a dyson swarm/sphere, but... I dunno? 3. Engines and the like and their limitations Electromagnetic drives are a more modern engine that uses just energy? Ionic propulsion? At that point, gravity manipulation might be possible- and so could nullifying the effects of a planet or such, should a ship have the powerhouse to do so, and if designed for it. But yeah, any powerful gravity well could bring a ship down. It just depends on the engine, aerodynamic shape, weight, etc. Some ships may be rather agile and fast in space, but gravity could easily suck them in, depending on design. As a person who enjoys science fiction, I can guarantee I can come up with a great deal of stuff that'd probably break the game .____. I have learned that if you want to make a world where certain things are set strictly in stone- certain technologies can't exist and that sort of thing- people won't enjoy it as much. At least, that's what I've learned from science fiction nation roleplaying. If you just say- have at it! There'll be tons of stuff. If you say that this and that and those can't exist because they don't belong in this universe- besides some obvious things, like devices that create whatever you want- then people'll start losing interest. Just a warning from experience. also me being a nerd Wow. I am [i]such[/i] a nerd. I'm gonna go see how a graviton engine works, and what's up with femtosecond lasers. [@RomanAria] Read dis stuff.