The rich have, Daniel Drezner writes, empowered a new kind of thinker—the “thought leader”—at the expense of the much-fretted-over “public intellectual.” Whereas public intellectuals like Noam Chomsky or Martha Nussbaum are skeptical and analytical, thought leaders like Thomas Friedman and Sheryl Sandberg “develop their own singular lens to explain the world, and then proselytize that worldview to anyone within earshot.”