“If you’ve got something that is independent of your mind, which has causal powers, which you can perceive in all these ways, to me you’re a long way toward being real”, the philosopher David Chalmers recently told Prashanth Ramakrishna in an interview for the New York Times. Chalmers invoked remarks by fellow Australian philosopher Samuel Alexander who said that: “To be real is to have causal powers”, and science fiction writer Philip K. Dick who said that, “a real thing is something that doesn’t go away when you stop believing in it.” 

Professor Chalmers’ comments were made in reference to the new and increasingly sophisticated world of virtual reality; something he believes has the status of a “subreality” (or similar) within our known physical reality. A place that still exists independent of our imaginations, where actions have consequences.

Chalmers draws parallels with our trusted physical reality, which is already so illusory on many levels. After all, the brain has no direct contact with the world and is reliant upon the mediation of our senses. As the mathematician-turned-philosopher points out, science tells us that vivid experiences like color are “just a bunch of wavelengths arising from the physical reflectance properties of objects that produce a certain kind of experience in us.” 

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