>Maybe SETI hasn't detected anything because generating a signal loud enough for us to detect is a stupendous amount of energy, and it's simply too much energy

>Maybe SETI hasn't detected anything because generating a signal loud enough for us to detect is a stupendous amount of energy, and it's simply too much energy for a single planet civilization to justify using on a radio transmission that's going to travel at most a quarter of the way across their star system. Plus even if you can do something doesn't mean you should https://en.wikipedia.org/wiki/Fermi_paradox#It_is_dangerous_to_communicate https://en.wikipedia.org/wiki/Fermi_paradox#It_is_dangerous_...