There’s two sorts of uncertainty here. The more physical kind: probability that life arises, intelligence evolves, etc etc.
And there’s “our uncertainty” kind of probability—we don’t know what it takes for the life to evolve—and this is common for all galaxies.
There’s two sorts of uncertainty here. The more physical kind: probability that life arises, intelligence evolves, etc etc.
And there’s “our uncertainty” kind of probability—we don’t know what it takes for the life to evolve—and this is common for all galaxies.