Also broadcasting is inefficient. Surely there are better use of energy than wasting so much of it that it becomes detectable from another solar system. An adv

Also broadcasting is inefficient. Surely there are better use of energy than wasting so much of it that it becomes detectable from another solar system. An advanced species would mostly broadcast on purpose only, which indeed, raise other concerns. There was a similar theory (well more a science magazine one) than Fermi paradox to explain there is no other planet in the universe. Until we started to know what to look for and suddenly they appeared everywhere. Fermi paradox is at the same time clever at the same time you wonder if you are actually doing something akin "There is 0 chance you can throw 1000 dice and produce to produce a positive integer number", just because you look at a specific sequence and indeed that exact sequence is statistically impossible to exist randomly.