This is an excellent TEDTalk on what is missing from bigdata (hint: it is the human element).
Why do so many companies make bad decisions, even with access to unprecedented amounts of data? With stories from Nokia to Netflix to the oracles of ancient Greece, Tricia Wang demystifies big data and identifies its pitfalls, suggesting that we focus instead on “thick data” — precious, unquantifiable insights from actual people — to make the right business decisions and thrive in the unknown.
An interesting (but not too surprising) stat from the intro is that 73% of all bigdata projects deliver no value.