I ask two students to sit in chairs, one right behind the other, with both students facing the same direction. Student A is in the back, facing Student B's back. I then have both students either close their eyes or don a blindfold. As the experimenter, I take Student A's right hand with my right and guide their index finger to tap the nose of Student B, who is seated in front of them. At the same time, I also use my left hand to tap on student A's nose. I control the tapping so that they are in perfect synchrony. Consider the message being sent to Student A's brain: my hand is two feet in
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