Is Quantum Theory Exact?

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Science  17 Jul 2009:
Vol. 325, Issue 5938, pp. 275-276
DOI: 10.1126/science.1176858

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Quantum mechanics has enjoyed many successes since its formulation in the early 20th century. It has explained the structure and interactions of atoms, nuclei, and subnuclear particles, and has given rise to revolutionary technologies, such as integrated circuit chips and magnetic resonance imaging. At the same time, it has generated puzzles that persist to this day.