"It was John Kenneth Galbraith, the hyperliterate economic sage, who coined the phrase "conventional wisdom." He did not consider it a compliment. "We associate truth with convenience," he wrote, "with what most closely accords with self-interest and personal well-being or promises best to avoid awkward effort or unwelcome dislocation of life. We also find highly acceptable what contributes most to self-esteem." Economic and social behaviors, Galbraith continued, "are complex, and to comprehend their character is mentally tiring. Therefore we adhere, as though to a raft, to those ideas which represent our understanding." So"