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Physics Has Two Perfect Theories. They Cannot Both Be Right.
Quantum mechanics and general relativity are each the most precisely tested theory in their domain. Put them in the same room, and the math breaks.
Physics has a problem it has not solved in over a century of trying, and it’s not for lack of brilliant people working on it. The problem is this: physics currently runs on two separate rulebooks, and they don’t merely fail to agree with each other — combine them directly, and the math collapses into nonsense.
One rulebook is quantum mechanics, the subject of this entire series: astonishingly precise at describing the very small — atoms, particles, fields. The other is Einstein’s general relativity, equally precise at describing the very large and the very massive — planets, stars, black holes, the expansion of the universe itself, gravity as the curvature of space and time rather than a force reaching out across empty space.
Each theory, on its own turf, is the most rigorously confirmed physical theory humans have ever produced. Put them together, and everything breaks.
