From a thread about what are the chances of intelligent life on other worlds outside of our solar system.
Rick Flemming
Why should anyone agree that “…the probability of life on other planets is greater than zero.”
There is the thin sliver of the pie chart with *things we know*. The rest of the pie chart is things we don’t know. But we don’t even know how big the pie chart is because…
we don’t know how much we don’t know!!
We don’t even know where the dark matter that’s supposed to be ‘out there’ is!! We haven’t found most of it!
You can speculate all you want about what’s out there in other star systems but they’re too far away to ever be reached by anything that can travel at less than the speed of light. Even at the speed of light they’re too far away. There is no way to prove one way or the other that life exists in another star system.