The Republican Party’s senior operatives publicly are committing the cardinal sin of promising to spend tens of millions of dollars of its most generous donors’ money to lard up on data: knowledge. What, instead, is required — to restore its ability to make good, winning, decisions — is virtue: understanding. This critical distinction appears lost on the politicos. Memo to the GOP donor base: to win (in 2014 and 2016 and beyond) the GOP can and must get just two things just right. First, the GOP must (and can) reunite its libertarian and conservative factions around the Constitution. Second, the...