Reality is that which, when you stop believing in it, doesn’t go away.
This is false, of course; with sufficiently advanced technology you could build a machine that read out your mind state and caused Earth to disappear once it determined you no longer believed in Earth. Doesn’t mean Earth was never real.
Reality is that which, when you stop believing in it, doesn’t go away.
This is false, of course; with sufficiently advanced technology you could build a machine that read out your mind state and caused Earth to disappear once it determined you no longer believed in Earth. Doesn’t mean Earth was never real.
This is exactly the sort of story that Philip K. Dick would write.
I don’t believe such a machine is possible.