Via  NY Times ( For Today’s Graduate, Just One Word: Statistics)

“The key is to let computers do what they are good at, which is trawling these massive data sets for something that is mathematically odd,” said Daniel Gruhl, an I.B.M. researcher whose recent work includes mining medical data to improve treatment. “And that makes it easier for humans to do what they are good at — explain those anomalies.”

What is true about internet data is also to some extent valid for high frequency data where anomalies need to be traded and arbitraged away…With world around us becoming more uncertain than ever, the only thing that is worth explaining and worth trading might be at a high frequency scale!!