How the Myers-Briggs test took over the world. Are you INTJ or an ENTJ? Do you know the percentage of people that shares the same personality type as you? Deemed "astrology for businessmen" for some, lauded as life-saving by others, the personality tests are a "springboard" for people to think about who they are. In this deep dive into the subject, Elle Hunt explores the fascinating history behind the Myers-Briggs test creators, how it went from a theory to a business worth over $20 million a year and whether its results hold as many truths as people think.