= Measure problem (cosmology)
{wiki=Measure_problem_(cosmology)}
The "measure problem" in cosmology refers to a fundamental issue concerning how to properly quantify or make predictions regarding the distribution of structures in the universe, specifically in the context of the inflationary universe model and the multiverse hypothesis. There are several aspects to the measure problem, but it fundamentally boils down to questions about how to define probabilities in a universe that may contain an infinite number of regions or "pocket" universes.
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