▲ | withinboredom 2 days ago | |
Yes, but a civilization collapsing doesn’t kill off an entire species nor (usually) wipe out knowledge completely. Thus it wouldn’t be a great filter. However, perhaps it is pretty common to create a grey goo, or nuke yourself, or whatever. That would be a life ending event. | ||
▲ | pantalaimon a day ago | parent [-] | |
It's still about what we are able to observe. If there is a bronze age civilization in the vicinity of betelgeuse, how would we tell? You'd need a civilization advanced enough to do radio communication - and that has a lot of fragile interdependencies. |