Sure you have the in-game stuff, but there is a good description in 3BP about the dark forest. Basically, aliens are coming to attack, guy says hey you do that I'll let the entire galaxy know where you originated; the threat is no longer that they are the technological super power, but that every potential threat would know where to strike first. So, it was reversed. The traveler made good friends. Stopped in our yard. Drew in said friends, and they weren't the type of friends to help clean up after the party. You probably knew and understood this, but maybe someone didn't, and maybe I made zero sense at all.