Quantum Mechanics. The Theoretical — Minimum

"It’s not everything," Art had told me before the accident. "It’s just what you need to survive. The bare essentials. The floor beneath which reality stops making sense."

I looked at the coffee mug on the table. It was full. It was empty. It was a ceramic shard embedded in the drywall. According to the notebook, these weren’t three different mugs. It was one "state," a complex superposition of possibilities. I reached for the handle. My hand passed through the steam of the full cup and gripped the cold porcelain of the empty one. Quantum mechanics. The theoretical minimum

This request appears to be inspired by the book Quantum Mechanics: The Theoretical Minimum by Leonard Susskind and Art Friedman. "It’s not everything," Art had told me before the accident