I enjoy the optimism of design, even though we can see it as doomed. But I'm telling most people that I'm not writing about design any more this year. It makes no sense at all during the recession unless you write about sustainable or ethical design-very basic things, like how to get clean water in countries with a shortage of it.

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

I like the idea of doing things that only exist for as long as they exist, which are not archives, which are not sold or prepared even.

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.

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.

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.