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What is time?
- Recent theories about the quantum nature of gravity provide some unique and fantastic answers to these millennia-old questions.
- The flow of time is an illusion based on a succession of immediate memories, your experience of now, and a succession of events you anticipate in the coming seconds.
- The reason for remembering the past and not the future has to do with entropy.
- Relativity offers at least two views of the nature of objective reality. In one, space-time is a “block” in which the worldlines of all objects exist in their entirety.
- Loop quantum gravity proposes that space consists of objects called nodes that define where three-dimensional space exists.
- An entangled system could give rise to the phenomenon of time and scientists have begun to test this hypothesis in the lab.
- Related to the idea of quantum entanglement is the no-boundary proposal for the origin of the Big Bang.
- On the cosmic scale, time seems to be a feature of entangled relationships between objects and not a feature from outside our universe.
- The arrow of time is a consequence of the increasing entropy of an expanding universe since the Big Bang.
- Our universe seems to have a consistent story to tell in the first place!
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