The Fermi Paradox: Interdiction

<p>We often look out into the galaxy and wonder where all the civilizations are, but could it be that we don't see them because they have all chosen to exist in fortress star systems, surrounded by despoiled deserts of their own making?</p><p>Go to https://brilliant.org/IsaacArthur/ to get a 30-day free trial and 20% off their annual subscription.</p><p>Join this channel to get access to perks: https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon...