Gribbin (1990: 173):
The observation that crystallises one ghost out of the array of potential electrons is equivalent, in terms of wave mechanics, to the disappearance of all of the array of probability waves except for one packet of waves that describes one real electron. This is called the "collapse of the wave function," and, bizarre though it is, it is at the heart of the Copenhagen interpretation, which is itself the foundation of quantum cookery [i.e. applications].
From the perspective of Systemic Functional Linguistic theory, this is not at all bizarre. The collapse of the wave function is the semiotic process of instantiation. In observing, experience is construed as an instance of meaning (electron) in line with the potential (wave of probability) that it instantiates. No crystallised ghosts need apply.