Your supply chain metrics may also lack formal definitions and standards common in finance and other areas of your business.

FORBES: Data, Data Everywhere!

But indulging in capsaicin does not quite meet the formal medical definitions of addiction.

ECONOMIST: Chilies

It doesn't change the basic story, but if I'm right about what the Treasury is planning, it will add to the impression that Mr Osborne is avoiding a formal change of policy, only by being quite flexible with his definitions.

BBC: A Plan B for the UK? (Part 2)