It's someone who shines a spotlight on the timeless corners of the "common record", the ones that are perhaps obscured from view, or forgotten, or poorly understood, making them timely again by contextualising them and linking them to ideas and issues of present urgency, correlating and interpreting.

It's this transmutation of information into practical wisdom about how the world works, and moral wisdom about how the world ought to work that sets the human apart from the algorithm - and from the computer.