George Lakoff vividly recalls where he was and what he was doing the night Donald Trump was elected president. “We were having some tacos,” said Lakoff, a professor of linguistics at UC Berkeley. “I felt pretty bad afterward. And it wasn’t just the tacos.” A lot of people had heartburn that night, unable to understand how such a uniquely unqualified candidate could be elected to the highest office in the free world. Lakoff understood exactly what had occurred. “Why was it that all the polls were wrong?” asked Lakoff, speaking to a packed auditorium Thursday night at San Francisco’s Commonwealth...