Psychometrics, deep data
“Kosinski and his team continued, tirelessly refining their models. In 2012, Kosinski demonstrated that from a mere 68 Facebook likes, a lot about a user could be reliably predicted: skin color (95% certainty), sexual orientation (88% certainty), Democrat or Republican (85%). But there’s more: level of intellect; religious affiliation; alcohol-, cigarette-, and drug use could all be calculated. Even whether or not your parents stayed together until you were 21 could be teased out of the data”