[quote=@catchamber]
If you don't ban faster than light travel, you will get surprise attacks. If you don't ban ansibles, you will get relativistic travel induced paradoxes. If you don't ban gravity manipulation, you will get impenetrable force fields. If you don't ban magical nanomachines, you will get swarms of planet eaters.

Just try to ban FTL travel in gravity wells, but that won't stop the relativistic FTL warheads from popping into the edge of your system.

Go ahead and wave FTL inhibitors and FTL sensors, but mass production and logic will still make the can of worms explode.

Try disrupting ansibles at >1% light-speed, but prolonged time dilation is still possible on galactic scales.

Blab about how energy hungry gravity engines are, but antimatter and dyson swarms will overcome that.

Say that magical nanomachines are too difficult to invent, but all it takes is one rogue scientist to create and spread the knowledge to turn the galaxy into a cybernetic hell.
[/quote]

Again, just use common sense and mob democracy to sort it out. If someone decides they want to have planet killing drones, then they're going to get shit on OOC very quickly. Even as cynical as I am, I still believe if you have people bound to common sense and not going overboard (and given how there's a tech base and a tech cap or something like that I think), you shouldn't have those issues. And even if you do, if the majority of players/GM believe it to be breaking the RP then it'll be removed.

No need to get into the nitty gritty advanced theoretical physics since I'm going to be honest, that's a massive turn off to anyone looking into sci-fi. Most people don't want to think on how many ways you can fuck up Newton's laws in space with vague concepts, they just want to have fun in space. I bet you if you didn't bring it up, most if not all of the people here would have no idea wtf an ansibles or thinking of how to create time paradoxes and shit.