If they cannot, they will lack the credibility to win capital-raising business from the world's companies and governments.

ECONOMIST: Out of their league?

The central banks' credibility depends on being prepared to do two unpopular things: raising interest rates, despite the economic pain, and letting financial institutions fail.

ECONOMIST: The credit crunch

They point out that by raising the issue at all, at such a high level, the church is granted the theory some credibility.

BBC: Despatches