english: And so what I do is, I write computer programs that study very large sets of these footprints, and then try to draw conclusions about the people who left them -- what they feel, what they think, what's different in the world today than usual, these sorts of questions.
non_english: Mijn taak is het schrijven van computerprogramma's die grote reeksen van voetsporen bestuderen, en conclusies trekken  over wie ze nalaat, wat ze voelen, wat ze denken, wat er in de wereld vandaag anders is dan normaal, enzovoort.