> it’s impossible to prove there is life beyond earth. why do you say that? If SETI finds unambiguous signals, and they're independently confirmed several time

> it’s impossible to prove there is life beyond earth. why do you say that? If SETI finds unambiguous signals, and they're independently confirmed several times, why would that not be "proof"? As for the last sentence, the less said the better. "All our existing evidence" is pathetically small.