At some point near the one-hour mark, wooziness strikes. It’s that voice, that shrill drone. You can only take so much before the mind constricts and the room spins into a hall of mirrors. You’ve got to get out, go for a walk, get some fresh air, because there’s still two more hours left of Hillary Clinton’s Masterclass, titled “The Power of Resilience,” and we’re still unsure if anyone has yet managed to hobble across the finish line.