  Understanding the quantum measurement problem is closely associated with
understanding wave function collapse. Motivated by Breuer's claim that it is
impossible for an observer to distinguish all states of a system in which it is
contained, wave function collapse is tied to self observation in the Schmidt
biorthonormal decomposition of entangled systems. This approach provides
quantum mechanics in general and relational quantum mechanics in particular
with a clean, well motivated explanation of the measurement process and wave
function collapse.
