The Candidates — String Theory, Loops, AdS/CFT

Understanding the Complex: The Search for a Theory of Everything

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Gravity won't join quantum mechanics with standard methods. Physicists have tried three major approaches to force a union. None has produced a confirmed theory with testable predictions. All have produced genuine mathematical insights.

This lesson covers what each candidate says, what it gets right, and where critics push back — including from inside the physics community.

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