"we find evidence that life is more likely than expected" But only after we really lowered our expectations in the first place. I have an old book, about the V

"we find evidence that life is more likely than expected" But only after we really lowered our expectations in the first place. I have an old book, about the Viking Mars lander, describing the technical details, before the rover succesfully landed on mars. It is full of optimism and a strong expectation, that it will find evidence of at least bacteria. And before we had strong telescopes and rockets, there was a strong expectation, that Mars has developed life. We know, that bacteria can survive in stasis mode on asteroids - yet we have not found life on any other planet.