Big data this, big data that. Wow. At the end we will have better ways to sell underwear, automobiles, and “next day” pills (although in the latter case politics and religion might actually trump Amazon and Google). Blind empiricism. Every time you click a key on the Internet it goes into some big database.

“Little data” — lovingly crafted to test theories and collected and analyzed with great care by highly trained professionals — has built our theories of personality, social interactions, the cosmos, and the behavioral economics of  buying or saving.

Big data drives marketing. Little data drives the future through generalizable theory.

Click on the figure below to zoom.