“The smartphone was invented in 2007, but it didn’t really become commonplace until the 2010s, exactly when teen happiness fell off a cliff”

Link. “Teens had been getting gradually more isolated through the decades — perhaps as a result of larger houses and better entertainment options at home. But face-to-face interaction really plummeted right after … 2010”

Google became Evil around then too. 2010 was a bad inflection.