Quantum Mechanics in the Light of Quantum Cosmology

Understand

We sketch a quantum mechanical framework for the universe as a whole.

• Within that framework we propose a program for describing the ultimate origin in quantum cosmology of the quasiclassical domain of familiar experience and for characterizing the process of measurement.
• Predictions in quantum mechanics are made from probabilities for sets of alternative histories.
• Probabilities can be assigned only to sets of histories that approximately decohere.