Laffer curve at an intermediate rate of taxation, and then falls again to zero revenue at a 100% tax rate. However, the shape of the curve is uncertain and disputed among economists. Under some assumptions, such as revenue being a continuous function of the rate of taxation, the maximum illustrated by the Laffer curve is a result of Rolle's theorem, which is a standard result in calculus. One implication of the Laffer curve is that reducing or increasing tax rates beyond a certain point is counter-productive for raising further tax revenue. A hypothetical Laffer curve for any given economy can only be
The J Curve (book) The J Curve (book) The J Curve: A New Way to Understand Why Nations Rise and Fall (Simon & Schuster: 2006) is a book by political scientist Ian Bremmer. It was named a "Book of the Year" in 2006 by "The Economist". Bremmer's J Curve describes the relationship between a country's openness and its stability; focusing on the notion that while many countries are stable because they are open (the United States, France, Japan), others are stable because they are closed (North Korea, Cuba, Iraq under Saddam Hussein). According to Bremmer, a government's motivations differ dramatically depending on where they