Measure problem

Measure problem may refer to:

• Measure problem (cosmology), problem concerning how to compute fractions of universes of different types within a multiverse
• A problem in measure theory–see Solovay model
• Klee's measure problem, problem of determining how efficiently the measure of a union of rectangular ranges can be computed
• McNamara fallacy, a bias disregarding what cannot be easily measured

• Measurement problem in quantum mechanics