I agree with you. We know that our planet and the qualities that it possesses are appropriate for sustaining life. Who's to say a form of life couldn't arise on

I agree with you. We know that our planet and the qualities that it possesses are appropriate for sustaining life. Who's to say a form of life couldn't arise on a planet incapable of sustaining life as we know it. Would that life, then, view our planet as incapable of sustaining life? If it did bump into us, would an intelligence arising on a planet "incapable" of supporting life even see us as life forms?