Emotion is the goose that lays the golden eggs, hatching stock market movement—but not the other way around. There’s no chicken-and-egg cycle to be found.

predicting influence on behavior.

In fact, it is usually what individuals have done that predicts what they will do.

There are about 100 billion bacteria per gram. Each bacterium has DNA. . . . This means human stool has a data capacity of 100,000 terabytes of information stored per gram.”

Six hundred blog posts are published per minute;

Response models don’t predict the response caused by contact;

Websites serve the ads that get clicked the most, and run random AB tests to compare which web page design and contents lead to the most buying.

Error-prone data usually just means fewer conclusions will be drawn, rather than strong false ones, but this case was exceptional—a close call!

kept a keen eye on the underlying response models and how they could be improved. Companies