Possible retrocausal events and time paradoxes

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    Retrocausality
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SUMMARY

The discussion centers on the feasibility of retrocausal events within the framework of general relativity (GR) and Einstein's field equations. While certain solutions suggest the existence of "closed timelike curves," which theoretically permit time travel, the consensus is that these scenarios are unlikely to manifest in reality. The mathematical possibilities do not equate to practical occurrences, reinforcing the notion that time travel remains a speculative concept.

PREREQUISITES
  • Understanding of Einstein's field equations
  • Familiarity with general relativity (GR)
  • Knowledge of closed timelike curves
  • Basic grasp of theoretical physics concepts
NEXT STEPS
  • Research the implications of closed timelike curves in theoretical physics
  • Explore the limitations of general relativity in predicting time travel
  • Study the philosophical implications of retrocausality
  • Investigate alternative theories of time and causality
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Physicists, philosophers of science, and students of theoretical physics interested in the complexities of time travel and causality.

Trollfaz
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Does the universe allow retrocausal events to happen as long as there are no time paradoxes?
 
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Not as far as we know. There are some solutions to Einstein's field equations of GR that appear to allow for "closed timelike curves" (basically an object would travel through spacetime back to its starting point, allowing for time travel), but it's likely that this cannot actually happen. Just because the math says something is possible doesn't mean it can actually happen in real life.

Note that time travel threads often attract posts with a high probability of violating PF rules, so I'm going to close this thread before I have to hand someone a warning.

Thread locked.
 

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