>This found its reductio in Bryan Caplan, who suggested that voters are rationally ignorant of politics because the costs outweigh the benefits, and so economists (who are obviously right about everything) should dictate public policy. You know, like in Chile.

At his most extreme, Caplan proposed a weighted voting system, where higher education led to more votes. That's a far cry from "dictating public policy," and even further from the Chilean system, where some Chicago-school economists had moderate influence on a dictator's economic policies and essentially zero influence on other aspects of governance (i.e., whether people should be disappeared).