Neil Gershenfeld

Fungible goods in economics can be extended and traded. So, half as much grain is half as much useful, but half a baby or half a computer is less useful than a whole baby or a whole computer, and we've been trying to make computers that work that way.

It is only when you watch the dense mass of thousands of ants, crowded together around the Hill, blackening the ground, that you begin to see the whole beast, and now you observe it thinking, planning, calculating. It is an intelligence, a kind of live computer, with crawling bits for its wits.

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.