Is this real life, or The Matrix?

Scepticism and simulation

Are we living in a simulation? Is there anyway to know we're not? The answer might not be completely reassuring, but we don't have to give up on knowledge altogether, writes Anandi Hattiangadi. 

It is the year 4000CE, and there are no trees, no birds, and no humans. The Earth has been taken over by artificial superintelligences (ASIs), who vastly exceed humans in their computational capacity. These beings have destroyed us along with most organic matter on the planet in pursuit of the materials and power needed for their existence. Though they care little for the natural world, the ASI’s pursuit of knowledge is rapacious. In order to understand their history, they have developed a computer simulation, much like the simulated world depicted in the film, The Matrix, but which is a perfect computational model of the universe down to the smallest subatomic particle, and from the very moment of the big bang. As the program runs, virtual organisms evolve, from virtual amoebae to virtual dinosaurs, and ultimately, virtual humans—one of whom is just like you. Virtual-you enjoys all of your sensory experiences and thoughts. Virtual-you interacts with virtual friends and family who are indistinguishable from yours. And virtual-you lives in a virtual world that is an exact, digital replica of your world, in every microphysical detail. In fact, virtual-you is reading this article right now. Are you virtual-you?

“Of course not!”, you say. “The scenario just described is fantastical and highly unlikely to be true.” However, a growing number of philosophers, scientists, and forecasters have been taking seriously the possibility that rapidly accelerating progress in artificial intelligence and robotics will lead to a ‘technological singularity’, an ‘intelligence explosion’ from which super intelligent beings will emerge who are capable of both destroying us and creating powerful, complex digital worlds. Elon Musk called AI humanity’s “biggest existential threat”, while Oxford’s Nick Boström has argued that it is highly likely that we are virtual beings existing in a computer simulation. A crucial assumption of Boström’s argument is that your conscious experiences and thoughts can be realized in a substrate quite different from a human brain; that your mind could be ‘uploaded’ to a powerful enough computer. Though controversial, this assumption is nevertheless plausible. For instance, we are drawn to viewing the character Ava in the film Ex-Machina as possessing a conscious mind, though her mind is realized in a silicone brain.

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