+The "measurement problem" in [Quantum Mechanics](/wiki/quantum_mechanics) addresses the puzzle of how a quantum system, existing in a superposition of possibilities, yields a single, definite outcome upon observation. It questions the nature of [Reality](/wiki/reality) itself and the observer's role in collapsing potential into actuality.
+## See also
+- [Superposition](/wiki/superposition)
+- [Observer Effect](/wiki/observer_effect)
+- [Wave Function](/wiki/wave_function)
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