# 15: The Quantum Mechanics Nobody Rreally Understands

- Page ID
- 28710

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- 15.2: What does it mean - Wavefunction collapse and the EPR paradox
- The interpretation of collapsing wavefunctions is often regarded as unphysical, or philosophically problematic. There appears to be a contradiction with relativity in the idea that the wavefunction collapses instantaneously throughout space, although the wavefunction is not measurable.