Well, this is certainly one of the most "tame" theory, and one that seems the most reasonable.
I leave that here if you're interested :
https://en.wikipedia.org/wiki/Fermi_paradox
https://en.wikipedia.org/wiki/Great_Filter
Well, this is certainly one of the most "tame" theory, and one that seems the most reasonable.
I leave that here if you're interested :
https://en.wikipedia.org/wiki/Fermi_paradox
https://en.wikipedia.org/wiki/Great_Filter