Most old cities are now sclerotic machines that dispense known qualities in ever-greater quantities, instead of laboratories of the uncertain. Only the skyscraper offers business the wide-open spaces of a man-made Wild West, a frontier in the sky.

Lagos has also had a particular effect on my career. I was there early, and although it was a courageous step to go there and invest on this scale - I went there maybe 20 times - it's also been also super-controversial. There's an old school of thought that somebody like me has no place to go there.Because of colonialism and so on.

The acceptance of certain realities doesn't preclude idealism. It can lead to certain breakthroughs.

The real thing we tried to look at is what happens to a society when the state is absent. At that point, the state had really withdrawn from Lagos; the city was left to its own devices, both in terms of money and services. That, by definition, created an unbelievable proliferation of independent agency: each citizen needed to take, in any day, maybe 400 or 500 independent decisions on how to survive that extremely complex system.

In the end, there will be little else for us to do but shop.

I'd say that my profession ends where architectural thinking ends - architectural thinking in terms of thinking about programs and organizational structure. These abstractions play a role in many other disciplines, and those disciplines are now defining their 'architectures' as well.

We say we want to create beauty, identity, quality, singularity. And yet, maybe in truth these cities that we have are desired. Maybe their very characterlessness provides the best context for living.