Ronald Reagan once said an economist is someone who sees something that works in practice and wonders if it would work in theory. So why is it that when confronted with a concept that works in both practice and theory, so many people refuse to believe it? The Laffer Curve, popularized by economist Arthur Laffer, says the government can maximize tax revenue by setting the tax rate at ... The logic is obvious on the ends of the spectrum: if the tax rate is 0%, the government collects no money. If it is 100%, people have no reason to earn,...