A dramatist seeks to understand the financial crisis.

In retrospect is it fair to say that the idea that banks could manage risk was a total illusion?

On 15 September 2008, capitalism came to a grinding halt. As sub-prime mortgages and toxic securities continued to dominate the headlines, this spring the National Theatre asked David Hare to write an urgent and immediate work to be staged this autumn that sought to find out what had happened, and why.

Capitalism works when greed and fear are in the correct balance. This time they got out of balance. Too much greed, not enough fear.

Meeting with many of the key players from the financial world, David Hare, author of The Permanent Way and Stuff Happens, has created The Power of Yes: a compelling narrative, as enlightening as it is entertaining.

Not so much a play as a jaw-dropping account of how, as the banks went bust, capitalism was replaced by a socialism that bailed out the rich alone.