The world on a billionaire's budget
- Written by Andrew D. Hwang, Associate Professor of Mathematics, College of the Holy Cross
Jeff Bezos is now the richest person in the world.Reed Saxon/AP Photo
The world’s wealthiest are prospering. As of February 2017, there were about 2,000 billionaires in the world. This micro-elite controls over US$7.6 trillion, an increase of 18 percent from 2016.
A billionaire’s spending power is difficult to grasp, both because most...

