John Gottman who is a psychologist who wrote, The Mathematics of Marriage: Dynamic Nonlinear Models. He studied relationship in an effort to be able to predict who would divorce with very limited data. He came up with a super effective formula.
He claims he can can listen to a couple talk about anything, for one hour, then predict with 95% accuracy if they will be married or divorced within 15 years. If he listens for just 15 minutes, he can still predict this with 90% accuracy! He got so good at this, he found he could eavesdrop on a couple eating dinner in a restaurant and have a pretty good idea where they were headed. (...)
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