MIT Means that we need a more nuanced approach to predicting job performance. For all the promise new predictability techniques hold, it’s difficult to measure something as complex as a person for several reasons, we must concur. The best guess here regarding personality and potential tests is that results have been mixed (at best). On the one hand, a good psychometric test can easily outperform a résumé scan and interview at predicting job performance and retention. In the light of this reason and others, this article questions whether we can ever really be accurate when it comes to people analytics.