I don’t know much about astronomy. But is it possible a more advanced alien civ has colonized much of the galaxy, but we haven’t seen them because they anticipated the tech we would be using to make astronomical observations and know how to cloak from it?
I feel like it’s very easy to miss signals from advanced civilizations because there is so much noise in the universe. There are also a lot of practical concerns with colonizing large swathes of space. A Von Neumann probe is very risky because it can “get cancer” and replicate out of control.
I don’t know much about astronomy. But is it possible a more advanced alien civ has colonized much of the galaxy, but we haven’t seen them because they anticipated the tech we would be using to make astronomical observations and know how to cloak from it?
Possible yes, but if all advanced civs are highly prioritising stealth, that implies some version of the Dark Forest theory, which is terrifying.
I feel like it’s very easy to miss signals from advanced civilizations because there is so much noise in the universe. There are also a lot of practical concerns with colonizing large swathes of space. A Von Neumann probe is very risky because it can “get cancer” and replicate out of control.
There are probably highly effective anti-cancer methods which have a modest performance overhead.