You are correct that my comments are missing the mark. Still, there is a sense in which the kinds of non-determinism represented by Born probabilities present problems for Si.
They would represent problems for determinism—if they were “real” probabailities. However the idea around here is that probabilities are in the mind.
It is a commonly heard statement that probabilities calculated within a pure state have a different character than the probabilities with which different pure states appear in a mixture, or density matrix. As Pauli put it, the former represents “Eine prinzipielle Unbestimmtheit, nicht nur Unbekanntheit” *. But this viewpoint leads to so many paradoxes and mysteries that we explore the consequences of the unified view, that all probability signifies only incomplete human information.
[*] Translation: “A fundamental uncertainty, not only obscurity”
They would represent problems for determinism—if they were “real” probabailities. However the idea around here is that probabilities are in the mind.
Here is E T Jaynes on the topic:
[*] Translation: “A fundamental uncertainty, not only obscurity”