“How come,” Fred grated, “that even if both hemispheres of my brain are dominant they don’t receive the same stimuli? Why can’t their two whatevers be synchronized, like stereo sound is?” Silence. “I mean,” he said, gesturing, “the left hand and the right hand when they grip an object, the same object, should—” “Left-handedness versus right-handedness, as for example what is meant by those terms with, say, a mirror image—in which the left hand ‘becomes’ the right hand …” The psychologist leaned down over Fred, who did not look up. “How would you define a left-hand glove compared to a
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