The Fermi paradox makes the unwarranted assumption that life “necessarily” brings technology, there could be indeed many, many planets with some kind of life but no outwardly visible signs.
What about the Earth history itself?
Several hundred millions years with life and not even 2 centuries with detectable technological artifacts (radio…)
The Fermi paradox makes the unwarranted assumption that life “necessarily” brings technology, there could be indeed many, many planets with some kind of life but no outwardly visible signs.
What about the Earth history itself?
Several hundred millions years with life and not even 2 centuries with detectable technological artifacts (radio…)
Right. So maybe it is a very rare event that a planet will develop the kind of technology we have.