Regarding point the second point. I assume there's a cost associated with using the weapon, even if it's untraceable. Regarding the Berserkers, it sounds a bit

Regarding point the second point. I assume there's a cost associated with using the weapon, even if it's untraceable. Regarding the Berserkers, it sounds a bit like a grey-goo scenario with self-replicating machines that wipe out all life. My personal feeling is that these scenarios are unlikely. If it were possible, it would have happened already... but it would be interesting to hear more systematic discussion of this point. With my brief googling, I've found it pretty difficult to find anything on real "cosmic sociology". The research work I've found has mostly focused on human colonization of other worlds. I feel like it would make fun reading if there's anything out there.