While I don't really have an opinion either way on whether we're likely alone or not, I just want to point out that the blindspot in this argument is that all t

While I don't really have an opinion either way on whether we're likely alone or not, I just want to point out that the blindspot in this argument is that all those things are truly necessary for life. This is like a form of the anthropic principle [1], where we think that just because those conditions appear to have been necessary for our evolution (and since Earth life is the only example of life we know), that exactly those conditions must be necessary for life elsewhere. [1] https://en.wikipedia.org/wiki/Anthropic_principle https://en.wikipedia.org/wiki/Anthropic_principle