After a two-week sesshin, and in deep meditation, a Zen disciple is tapped on the shoulder by a monk so the disciple can visit his Zen master about his assigned koan. He arises in the silent zendo, padding past others in lotus position, and enters a room for dokusan with his roshi. With a gassho to the Zen master, the disciple sits and waits for his teacher to speak. The roshi studies him silently. Then, rather than asking the student to show him Mu, the Roshi poses these to him, and they are all quantum puzzles:
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