The big idea: should we be using data to make life's big decisions?

How should you spend your time? For centuries, people have relied on their gut instincts to figure out the answers to these life-changing questions. Now, though, there is a better way. We are living through a data explosion, as vast amounts of information about all aspects of human behaviour have become more and more accessible. We can use this big data to help determine the best course to chart.