I keep coming back to the phrase "Dance with the system" - not just march onwards no matter what happens.

If you were disabled in Russia, you had to re-register every year, and it took up to six months to re-register, so people who lost limbs in Afghanistan had to prove that their leg hadn't grown back.

In the end, that's a blind alley - we have to get back to being able to think on our feet and react.

Economists who studied in the '80s tend to have a pretty crude neoclassical view that's just about freeing up prices and markets, and then you'll get the growth and everybody benefits. And they'll just repeat that, because if you're a minister or a senior civil servant, you don't have time to read anything anymore. You get very fixed in your views.

What you don't do is just say, "I've got all the ideas and all the knowledge, and listen to me."

I see [activists] getting really angry that people won't just do what the evidence tells them, and that's not very helpful. You need to actually think why that is.

I keep coming back to the phrase "Dance with the system" - not just march onwards no matter what happens.