Whatever Mr Cameron's views on tax, you are a little bit harsh on
Professor Laffer's theory, I think, which is far simpler and more eloquent than it is normally presented (including by the 1980s true believers, who largely hijacked it as a rhetorical device to justify tax cuts).
In 1974, the American economist Arthur
Laffer, then a
professor at the University of Chicago, was having dinner with his friend Jude Wanniski, an associate editor of the Wall Street Journal.