Psi-epistemic model
= Psi-epistemic model
{title2=$\psi$-epistemic}
An <ontological model of a quantum system> is psi-epistemic if some pair of distinct <pure states> has preparation measures with nonzero overlap. The same physical state can then be compatible with either preparation. This precise measure-overlap definition is stronger than merely interpreting a <wave function> as information or a computational tool.