"The Myers-Briggs Type Indicator is the most popular personality test in the world. It has been harnessed by Fortune 100 companies, universities, hospitals, churches, and the military. Its language--of extraversion vs. introversion, thinking vs. feeling--has inspired online dating platforms and Buzzfeed quizzes alike. And yet despite the test's widespread adoption, experts in the field of psychometric testing ... struggle to account for its success--no less to validate its results. How did the Myers-Briggs test insinuate itself into our jobs, our relationships, our Internet, our lives?"--