Wall Street Journal personal finance columnist Jason Zweig interviews David Leinweber, author of "Nerds on Wall Street." Leinweber, who mentions Wall Street & Technology a couple of times in his book and also runs a few images of our covers from more than a decade ago, talks about the dangers of "over mining" data. Over analyzing data can lead to false positives and he warns that financial professionals should not torture "the data until it screams."

David Leinweber, author of "Nerds on Wall Street," talks about the dangers of "over mining" data.