This post was originally written and published in French, Corrélation et causalité, circonstance et contexte Let’s imagine we collected a few pieces of information, for a clearly identified individuals, via connected devices, Thursday 18:30: a €45 purchase at a bar-tabac Friday 13:15, 1 hour above Porte Saint-Martin Saturday 14:00, 1 hour near Place de la République Trying to make the data “speak”, we might hesitate between a first version Thursday 18:30: a €45 purchase of cigarettes Friday 13:15, 1 hour at the mosque, at prayer … <a href=“https://freakonometrics.hypotheses.org/87986" …