The Intelligence Squared debate series has a cool gimmick: at the beginning, audience members vote on the resolution via little keypads at each seat; at the end, they vote again; whichever side changed the most minds “wins.” As last night’s debate began, it was exciting to find that 25% of the crowd voted “undecided,” meaning that many minds were open to persuasion as the four panelists debated the resolution, “The U.S. should step back from its special relationship with Israel.”