The discussion centers on the concept of time travel and its implications for causality, exploring whether backward time travel can occur without violating causal relationships. Participants examine theoretical frameworks, including Quantum Field Theory and general relativity, and consider various models such as closed timelike curves and traversable wormholes.
Participants express multiple competing views regarding the implications of time travel on causality, with no consensus reached on whether backward time travel can occur without violating causal principles.
Discussions involve complex theoretical frameworks and assumptions about time, causality, and the nature of particles, with unresolved questions about the implications of various models.
JesseM said:Are you pulling my leg? I said a few times you don't necessarily have to consider them "real" at all...
If you don't consider them real, but just a mathematical tool for making calculations about observable effects, why is this a problem? No actual measured effects go FTL or backwards in time.byron178 said:No i was being serious,i was reading that virtual particles in fact travel faster than light and backwards in time but don't violate causality,but i can't seem to wrap my head around this one.