alt Hacker News"Dark forest" doesn't work from a game-theoretical standpoint. It assumes that it's cheap to destroy entire planets and solar systems. Yet no-one seems to be colonizing other systems.
The optimal strategy in this case is to expand as quickly as possible, before others can grab or destroy resources.
I think one idea is that there aren't very many habitable planets. The Trisolarians are coming to Earth because it's their only option, not because they want to destroy humanity.