Quantum physics says that there is an infinite number of possibilities and parallels to the one that we know, and every event is also played out in a parallel world. It's kind of a crazy idea, but someone called Saibal Mitra at the University of Amsterdam says that if you could back up your memory in case of a catastrophic event, you could actually revert to that back-up and find an alternative world in which the Earth didn't explode or collide with Mars.

Franz Kafka once said that happiness consists in having an ideal and not progressing towards it. If you did progress towards it, you'd be unhappy because you'd never be able to reach it. You can incrementally improve your life, but you never quite experience the glamour. You never quite get to your utopia, or whatever it is. And once you realize that you can be quite Buddhist about it, and say, "Well, okay, I'm just going to keep detached from it all."

If you look at the steps being taken towards Scottish independence, they're being dealt with politically in very dull and boring ways. So if you just feverishly speculate numbered but random Scotlands - because in the book, it's a random sequence of possibilities - you can imagine many ways in which different things might happen.

Every lie creates a parallel world.. a world in which it is true

If you're a poet and you're using rhyme, rhyme generates ideas. If you're a songwriter and you're using melody and words together, they bounce off each other in interesting ways that you couldn't get otherwise, because you do things unexpectedly.

Design is interesting because it's utopian. Art is often a jaundiced commentary on contemporary life. Design is always about the future; it's always about something great and new that's come out that will make the future brighter. It has this weird 18th - century positivism about it.

Pablo Picasso said, "Art is the lie that tells the truth," and it's not a terribly radical statement. It's always been that you can tell truth through fiction. And this idea also comes from nuclear physics.