Inequality has remained persistently high for decades, and a new report shows just how stark the divide is between the richest and poorest people on the planet. The 2022 World Inequality Report was the product of four years of research and produced an unprecedented data set on just how wealth is distributed. The data serves as a complete rebuke of the trickle-down economic theory, which posits that cutting taxes on the rich will "trickle down" to those below, with the cuts eventually benefiting everyone.