Why big data is so big

Available for over a year

We love a transfromative technology here at Business Daily. So how about "big data"? Apparently it is like the old "small" data but there is just a whole lot more of it. So why is big data set to change the way we do virtually everything? Justin Rowlatt interviews Michael Chui of management consultants McKinsey about how the torrent of data digital technology is creating can be used and Damian Black of SQLStream explains why all this data could allow companies and governments to learn all sorts of secrets about us all.