I always thought that it's very likely that once a civilization starts advancing technologically, the rate of expansion and technological evolution will inevitably be so fast, that it only takes a blink of an eye (i.e. maybe a million years or so) for it to have completely transformed every corner of it's galaxy in ways we can't possibly imagine, but that will definitely make it impossible for other lifeforms that may exist to be independent of them.
So my point is that even if there are a lot of planets in the milky way where technologically advanced species' might eventually develop, the chance that one of them has developed and become technologically advanced at almost exactly the same moment than us is very unlikely. And if they had become technologically advanced earlier, we wouldn't be here, or at least milky way would look very different, full of all kinds of crazy stuff.
jussius t1_j0yhque wrote
Reply to Which theory about aliens is the most likely? by [deleted]
I always thought that it's very likely that once a civilization starts advancing technologically, the rate of expansion and technological evolution will inevitably be so fast, that it only takes a blink of an eye (i.e. maybe a million years or so) for it to have completely transformed every corner of it's galaxy in ways we can't possibly imagine, but that will definitely make it impossible for other lifeforms that may exist to be independent of them.
So my point is that even if there are a lot of planets in the milky way where technologically advanced species' might eventually develop, the chance that one of them has developed and become technologically advanced at almost exactly the same moment than us is very unlikely. And if they had become technologically advanced earlier, we wouldn't be here, or at least milky way would look very different, full of all kinds of crazy stuff.