  This paper reviews and suggests a resolution of the problem of definite
outcomes of measurement. This problem, also known as "Schrodinger's cat," has
long posed an apparent paradox because the state resulting from a measurement
appears to be a quantum superposition in which the detector is in two
macroscopically distinct states (alive and dead in the case of the cat)
simultaneously. Many alternative interpretations of the quantum mathematical
formalism, and several alternative modifications of the theory, have been
proposed to resolve this problem, but no consensus has formed supporting any
one of them. Applying standard quantum theory to the measurement state,
together with the analysis and results of decades of nonlocality experiments
with pairs of entangled systems, this paper shows the entangled measurement
state is not a paradoxical macroscopic superposition of states. It is instead a
phase-dependent superposition of correlations between states of the subsystems.
Thus Schrodinger's cat is a non-paradoxical "macroscopic correlation" in which
one of the two correlated systems happens to be a detector. This insight
resolves the problem of definite outcomes but it does not entirely resolve the
measurement problem because the entangled state is still reversible.
