Thanks. I took the liberty of transcribing the latter part of that section.
"We basically found that their background and references are the best predictor. You can't use them exclusively, but it's true: The best predictor of future performance is past performance. And that's what we really found out through the regression models. We also found that there were a few interviewers in the company who were very, very good. They were several standard deviations off, meaning that they could tell in an interview where or not someone was going to be good or not. In some cases, they would be aberrant and reach a different conclusion from the other interviewers, but they would be correct."
"We basically found that their background and references are the best predictor. You can't use them exclusively, but it's true: The best predictor of future performance is past performance. And that's what we really found out through the regression models. We also found that there were a few interviewers in the company who were very, very good. They were several standard deviations off, meaning that they could tell in an interview where or not someone was going to be good or not. In some cases, they would be aberrant and reach a different conclusion from the other interviewers, but they would be correct."