> If some sentient alien civilisation got 1 million years head-start on us wouldn't they basically already have achieved any technological advancement possible?
“Any technological advancement possible” (my emphasis) might exclude technological advances that would make us aware of intelligent life in other star systems.
Just because we can imagine things does not mean they are actually possible, even with lots of time to try.
“Any technological advancement possible” (my emphasis) might exclude technological advances that would make us aware of intelligent life in other star systems.
Just because we can imagine things does not mean they are actually possible, even with lots of time to try.