"Science fiction as a genre doesn’t really claim to predict the future. Rather, it works by extrapolating from elements of our actual world. It takes trends and tendencies that are already at work in the world around us, and imagines what might happen if these trends and tendencies were able to develop to the utmost, and to unfold their full potential. We might say that science fiction presents us with a world that “real, but not actual” – which is Gilles Deleuze’s definition of what he calls the virtual. Instead of telling us what the future will actually be like – something that is impossible to do, for the future always surprises us – science fiction portrays and develops those elements of potentiality, or indeed of futurity, that already exist in the present moment. It takes the implicit and makes it explicit; it unrolls and reveals that which exists in a cryptic and undeveloped form."