So, what the heck does it mean if humanity is all alone in the galaxy? (science video)

The god-king of scientific thought experiments, John Michael Godier, leaps into a creepy investigation of the hypothesis that there is no life on other planets and that we are all alone ourselves in the vastness of the cosmos. Yikes, man. Get a grip!

So, what the heck does it mean if humanity is all alone in the galaxy? (science video)
Like this, but without the aliens.

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