And analyzing the biology history, from 4.6 billion years of Earth existence, or from 13.7 billion years of universe's, for only 60 years humanity can detect th

And analyzing the biology history, from 4.6 billion years of Earth existence, or from 13.7 billion years of universe's, for only 60 years humanity can detect the signals from space. Every step toward that wasn't "inevitable" but improbable. There weren't multicelular life until around two billion years ago, but it took then two billion years and a lot of accident to have the communicating capable humans. And then, how long are we to last with this capabilities? We are much less smart than most believe, especially in preserving conditions for a communicating civilisation.