Where are the Aliens?

Where are the aliens? The Fermi Paradox asks why in such a huge and old universe, we don't see any aliens! This time round though the boys  focus on "The Great Filter"!!! What is the big barrier that is so difficult for life to pass that means we don't see other life out there... or is something else at play here? Join them as they meander our way through this topic and come tell us what to cover next on our socials! Music: EVA – 失望した