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“A sentence is understood more easily if it describes what an agent (System 2) does than if it describes what something is, what properties it has.”
― Daniel Kahneman, Thinking, Fast and Slow

“Macroscopic, classical objects don’t display quantum interference or exist in superpositions of states because their wavefunctions are not coherent.”
― Philip Ball, Beyond Weird: Why Everything You Thought You Knew about Quantum Physics Is Different

“But in quantum mechanics the environment has a central role in how things happen. It turns out to be precisely what conjures the illusion of classical physics out of the quantum soup.”
― Philip Ball, Beyond Weird: Why Everything You Thought You Knew about Quantum Physics Is Different

“Notice how I phrased that. It remains meaningful to think of these objects as having wavefunctions. They are, after all, made of quantum objects and so can be expressed as a combination of the corresponding wavefunctions. It’s just that the wavefunctions of distinct states of macroscopic objects, such as a coffee cup being in this place and that place, are not coherent. Quantum coherence is essentially what permits ‘quantumness’.”
― Philip Ball, Beyond Weird: Why Everything You Thought You Knew about Quantum Physics Is Different