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EXPERIMENT 4. In our fourth experiment, we tested a “nonlocal” aspect of the consciousness collapse interpretation. This is a bit tricky to grasp at first, because it invokes the timeless nature of the quantum world. I’ll go through this slowly. The idea that the quantum wave function collapses due to observation implies that the collapse occurs only when observation occurs, and not when the data are generated.295 That is, unlike events in the everyday world, where actions occur in particular locations and unfold in ordinary clock time, events in the quantum domain do not occur in time as we normally experience it. This is what is meant by the spooky “nonlocal” nature of quantum mechanics—events are connected across the usual limitations of space and time. When an elementary quantum object is not being observed, it remains in what’s called an “indeterminate state.” In that unobserved condition, the object has no definite properties yet—no size, shape, location, polarization, spin, or any other property that we ascribe to ordinary real objects. The consciousness collapse idea further proposes that when, and only when, an object is consciously observed does it take on real properties. To repeat—because this concept may make your brain hurt the first time you encounter it—if you take measurements of a quantum system using an inanimate recording device, like a camera, then that system will remain in an indeterminate state until it is observed. This ridiculous-sounding idea has been tested in conventional physics labs and it has definitely been shown to exist. That type of study is called the delayed-choice experiment.154, 324 We tested this idea in the present context by using a time-reversed version of our double-slit experiment, somewhat like the studies that Daryl Bem conducted, as discussed earlier in the chapter on precognition. This test also provided a more rigorous way for us to test the effect of participants being located within a few meters of the optical system, because all the data in this study were generated and recorded with the apparatus located by itself inside the shielded chamber, and with no one else present in the laboratory.
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Dean Radin (Supernormal: Science, Yoga and the Evidence for Extraordinary Psychic Abilities)