I have recently read that different interpretation of QM define measurement differently, but that some realists (examples?) refuse to define measurement at all..why is this?
I'm taking a class on the philosophy of physics and currently studying the measurement problem. I'm trying to understand the significance of why defining what a measurement 'is' is so important to this problem. I made a statement "Measurement plays a fundamental role, but is defined differently with respect to alternative interpretations of the quantum theory", but my lecturer pointed out that some realists do not define measurement at all, but I don't understand why?