The master says: "Close your eyes. Or even with your eyes open, imagine the following scene: a flock of birds on the wing. Now, tell me how many birds you saw: Five? Eleven? Sixteen?" Whatever the response -- and it is difficult for someone to say how many birds were seen -- one thing becomes quite clear in this small experiment. You can imagine a flock of birds, but the number of birds in the flock is beyond your control. Yet the scene was clear, well-defined, exact. There must be an answer to the question. Who was it that determined how many birds should appear in the imagined scene? Not you!