Christmas is cancelled this year, but what if it were permanently abolished, what would that mean for the economy? At the Financial Times, Tim Harford wonders about such a scenario. An excerpt:

“Imagine that this Christmas day, the Queen, the Pope and even Oprah Winfrey announced that Christmas would be a purely religious occasion from 2015 onwards. There would be no presents and no feasting. If people respected this declaration, about $75bn-$100bn of extra consumer spending in the US alone would simply not materialise next December. What then?

One possibility is that the economy would be just fine. This is the classical view of macroeconomics: nothing significant would change after the abolition of Christmas. We would retain the same labour force and the same skills, the same factories and the same power stations, the same financial sector and the same logistics networks. The capacity of the economy to produce goods and services would be undiminished, and after a period of adjustment, during which tinsel factories would be retooled and Christmas tree plantations replanted, all would be well.

What would replace nearly $100bn of seasonal consumer spending? Nothing noticeable, but the replacement would happen just the same. The productive capacity freed up by the disappearance of Christmas could be turned to other uses; prices would fall just enough to tempt us to spend our money at other times of the year. Indeed, cancelling Christmas might even provide a modest boost to our prosperity in the longer term, as bunching up all that spending into a few short weeks strains factories and supply chains. Smoothing out our spending would be more efficient.

This classical view of how the economy works is also the view taken by Mr Osborne, the UK chancellor, and by Republicans in the US. Their view is that government stimulus spending does not work; cut it back, they argue, and the economy would adjust as the private sector took up the slack.

On the other side of the debate stands Mr [Ed] Balls, the UK’s shadow chancellor, as well as American stimulus proponents such as Mr [Paul] Krugman and Lawrence Summers. Mr Krugman once commented that panic about an attack from aliens would help the economy because it would get the government spending money again. Since aliens are not available, Santa Claus will have to do.

This Keynesian view of how the economy works differs from the classical view in one crucial way: it argues that supply does not always and automatically create demand. When Christmas is abolished (or a financial crisis devastates people’s confidence and their spending power), consumers will plan to spend less. And if consumers plan to spend less, price adjustments may not induce them to change their minds; the price adjustments may not even happen. If Christmas spending disappears, it may take many years for the economy to replace it. Those factories will still be there and the workers will remain available — but they will stand idle.

Who is right?”