"Indeed, it is the quantum entanglement between the 'object' and the 'agencies of observation,' in this case, between the atom and the apparatus that is precisely what we need to attend to in making the interference pattern evident. Once again we see evidence for the ontological priority of phenomena over objects. If one focuses on abstract individual entities the result is an utter mystery, we cannot account for the seemingly impossible behavior of the atoms. It’s not that the experimenter changes a past that had already been present or that atoms fall in line with a new future simply by erasing information. The point is that the past was never simply there to begin with and the future is not simply what will unfold; the 'past' and the 'future' are iteratively reworked and enfolded through the iterative practices of spacetimemattering—including the which-slit detection and the subsequent erasure of which-slit information—all are one phenomenon."
- Karen Barad (1956 - )
Meeting the Universe Halfway
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