“A tiny crystal in your inner ear, smaller than a grain of sand, moved the wrong way and pressed on the nerves that tell you which way is up,” the earnest young ER doctor explained. I had been sitting quietly at my kitchen table when the world turned into a gigantic tilt-a-whirl ride, with no up or down and everything in motion… That was Thursday midnight two weeks ago. Six rather dramatically unpleasant hours later, it took me another hour to travel, inchworm-style, the 2