Mr Milburn said the blockade was causing serious problems for NHS staff and patients.

BBC: You are in: Health

This is our old friend, "helicopter money", which Wadhwani believes could help boost economic activity without causing serious problems for inflation. (In fact, he first proposed this with another economist Michael Dicks in 2011).

BBC: On markets and helicopters

Potential growth is the maximum growth rate an economy could achieve without causing serious overheating problems.

FORBES: Estimating China's New Growth Potential