What the world learned from the American century: The global wealth pyramid turns into a fat diamond spinning top

The article discusses the shift from the American wealth pyramid model, as envisioned by Henry Luce's 'American Century,' to a more complex 'fat diamond' structure marked by global middle-class growth and economic stratification. It highlights the rise of the Asian middle class, the contraction of the global poor base, and the fracturing of the American middle class into distinct economic tiers.