Trying to relate a bit better to where QM stops, and Interpretations begin. Especially with respect to Decoherence. Is Decoherence seen as a measurable phenomena, or, just as a "possible" explanation for measurable phenomena? Obviously when I mark a path in a 2 slit experiment I cause decoherence (or, I lose coherence). Are there multiple connotations for Decoherence? Does it get fuzzy when one tries to take Decoherence too far? I'm hoping to avoid a right/wrong private theory or Interpretation, but rather get a cleaner understand of the division.