It was a good read.
It reflects on how important external data is, and increasingly becoming a major factor in decision making at all levels in an organization.
With the increasing usage of social media and all other online channels, people, as well as organizations, leave breadcrumbs of their life online. Neglecting this data, and focusing on only internal data would easily cause you to make the wrong decisions, and make you more reactive as an organization, instead of proactive.
Even though there are some challenges with external data such as privacy concerns, ethical issues, it still looks to be the direction we are heading towards, and it would soon be an integral part of every organization's structure in decision making, like how internal data has become.