Sneaky Scientists 1 :)

…in our experiment the “exact position” of the particle is a mere speculative concept, like the gender, color or happiness of the particle. These degrees of freedom may also exist but if they cannot be measured then we should not include them in the description of the physical world.

 

Nonequilibrium Many-Body Theory of Quantum Systems: A Modern Introduction.

By: Gianluca Stefanucci