“My God. One more question: If there are macro-atoms, then is there macro-matter, and a macro-world?” “Now we’re into grand questions of philosophy,” Ding Yi said to the questioner with a smile. “So is there or isn’t there a macro-world?” the questioner followed. We were like a group of children in the thrall of a story. “I believe there’s a macro-world. Or a macro-universe. But what it’s like is an unknown unknown. Maybe it’s completely different from our own world. Maybe it corresponds exactly, like the posited matter and antimatter universes, and there’s a macro-Earth with a macro-you and
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