> there’s likely a trillion inhabited worlds full of beings we will never know. And by the time our radio signal gets to them, the ones there now will all be l

> there’s likely a trillion inhabited worlds full of beings we will never know. And by the time our radio signal gets to them, the ones there now will all be long dead, interpreted by some future generation. By the time we get the response, humanity may be long extinct. So for all intents and purposes, we may as well be alone in the universe.