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Questions for Discussion: String Theory: Newton's Embarrassing Secret
What was the first force to be understood scientifically?
What was Newton's embarrassing secret?
What does it mean to say that the velocity of light is a kind of "cosmic speed limit"?
Describe Einstein's thought experiment (the "cosmic catastrophe"). How did it prove that Newton's theory of gravity was wrong?
What would have to be true about the "speed of gravity" for Newton to be right?
