The shape of an eyebrow does not indicate an extrovert, at least not with any better accuracy, than a Human interviewer can achieve with five minutes of convers

The shape of an eyebrow does not indicate an extrovert, at least not with any better accuracy, than a Human interviewer can achieve with five minutes of conversation. And then there is the question whether introvertedness is even a disqualifying trait in a sales representative. A good team will probably have both introverts and extroverts at some ratio. Yes, it's "bad science". But it's also bad business. It's the same with genetics: As soon as we have a full understanding of risk factors and beneficial traits, and we're far from that, people competing for a job would probably all have multiple "bad" and multiple "good" qualities, which cancel out much of the benefits of testing in the first place.