Gerard ‘T Hooft has made many contributions to quantum physics yet said many controversial or novel insights into the state of quantum mechanics research and theory today. He believes quantum superpositions don’t really exist except as statistical conveniences and that means that quantum computing may be inaccurate down the road. His comments in an interview with Scientific American are rather remarkable and weighty.
The remark I found most intriguing was the one about black holes and the information of three dimensional space being encoded on a two-dimensional surface outside it. That original insight of ‘T Hooft paved the way for the cascade of holographic universe ideas and movies that followed. Yet ‘T Hooft says the criterion is simply a mathematical method rather than actual. There are other paradigms he could have employed.
If all of the quantum phenomena of space time are entanglements that seems consistent with the other new idea floating about recently that time is a contingent, emergent property of local quantum entanglement.. Quantum entanglements in three dimensional space give rise to the appearance of three dimension space plus time while the host is two-dimensional and massless.
https://www.youtube.com/watch?v=tFvJwZKQ9QA
As I understand it the extra dimensions are contingent, emergent properties of the quantum fluctuation and entanglement of lower dimensions. That too, obviously, could be nonsense. There is a new quantum theory of gravity based on quantum entropy--- quantum information theory. Its rather clever. I wonder though if 'T Hooft's idea that quantum mechanics as statistical generality rather than specific and exact wouldn't affect the new quantum entropy theory a little. The proposed G field would also cohere within the contingent, emergent 4 dimensional criterion. https://www.youtube.com/watch?v=7YuzRpE6erY
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