Is Quantum Mechanics Stopping Aliens From Contacting Us?

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"Why hasn't extraterrestrial life contacted us yet?" is the core question of the Fermi Paradox - in short, the observable universe contains so many millions of billions of stars and planets that the chances of intelligent life arising elsewhere (and probably many, many, many places elsewhere) seems almost inevitable. And yet we haven't heard from any aliens. One possible explanation is that we’re overlooking quantum mechanics. Here’s the thing: to communicate long distances in space, it may be that you need to be using quantum communication. A fundamental problem with interstellar communication is the speed of light - the distances between stars are just so big and light takes so long to get there, you have to be really efficient with your communication - you

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