Ergo, goes the theory, it must be cause and effect and ergo, ergo we must take draconian measures to reduce the emissions, even if that means sharply cutting our standard of living and massively increasing bureaucratic controls over our lives.

FORBES: Soviet Unionism

So this means that the perceived quality of private-sector loans to the Spanish government would deteriorate - which, in theory, would have the perverse effect of making it harder and more expensive for Spain to borrow from conventional sources.

BBC: Messy Spanish rescue

Regardless of which theory is correct (and both might be wrong), the effect of fewer cosmic rays would be fewer clouds and since clouds tend to cool the earth by reflecting incoming solar radiation away from it a warmer planet.

ECONOMIST: Global warming: In flux | The

Allardyce clearly does not adhere to the theory that a good Cup run builds a team's confidence and has a beneficial knock-on effect on their league form.

BBC: Has the magic of the FA Cup returned?