Back to Quantum Mechanics
Completeness Question
- The predictions of Quantum Mechanics are probabilities
- Versus the deterministic predictions of Classical Physics
- The question
- Does the probabilistic nature of the predictions result from not knowing all the variables or from real chance in nature?
- Einstein argued that Quantum Mechanics was incomplete:
- “I, at any rate, am convinced that He does not play dice.”
Measurement Question
- Three postulates of Quantum Mechanics explicitly use the undefined term measurement
- Time Evolution, Prediction, Collapse
- (The postulates of Classical Physics do not use the term.)
- What constitutes a measurement and when precisely does a measurement take place?
- Does measurement require a conscious observer?
- Does measurement involve the interaction between the subatomic world and the world of everyday objects?
A Philosopher's View 