A look at (1a) shows that in our case, disappears, and therefore so does the speed. The objection to this theoretical experiment, which Pauli raised a quarter of a century ago, is of particular importance when looking at our example. The disappearance of speed contradicts the well-founded requirement that, in the case of a macro system, the movement of the system should approximately coincide with that of classical mechanics.
The second attempt to find a real description of the individual system based on the Schrödinger equation was recently made by Schrödinger himself. His thoughts on this are brief. The Ψ function represents reality itself and does not require Born's statistical interpretation. The atomistic formations, which the Ψ field should already reveal something about, do not exist at all, at least not as localized formations. When applied to our macro system, this means that the macrobody does not exist as such at all; in any case, there is no such thing as the position of its center of gravity at a certain time—not even an approximate one. This also breaches the requirement that the quantum theoretical description of the motion of a macro system must approximate the corresponding description in classical mechanics.
The result of our observation is as follows. The only acceptable interpretation of the Schrödinger equation to date is the statistical interpretation given by Born. However, this only provides statistical statements about system universes, and not a real description of the individual system.
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