Are we real? What if we're just a dream? A meme? Or looped replay of a song created by a civilization long gone? What if we’re living in a computer simulation?
"Have you ever wondered if life is not exactly what it’s cracked up to be? OK, let’s take that thought a little further. Have you ever suffered from an identity crisis? Yes? One in which you suspected that you’re not a real person, but instead an extremely sophisticated computer simulation of a real person produced by an immensely more developed civilisation than that which we take to be our own?
It’s just possible that I lost you on that last point, but stay with me, because the reality we take for granted is coming under increasing technological and theoretical threat."