A fascinating example is the divide around emotional intelligence. On one extreme is Daniel Goleman, who popularized the concept. He preaches that emotional intelligence matters more for performance than cognitive ability (IQ) and accounts for “nearly 90 percent” of success in leadership jobs. At the other extreme is Jordan Peterson, writing that “There is NO SUCH THING AS EQ” and prosecuting emotional intelligence as “a fraudulent concept, a fad, a convenient band-wagon, a corporate marketing scheme.”

