Are Causality Violations Undesirable?

  title={Are Causality Violations Undesirable?},
  author={Hunter Monroe},
  journal={Foundations of Physics},
  • Hunter Monroe
  • Published 15 September 2006
  • Philosophy
  • Foundations of Physics
Causality violations are typically seen as unrealistic and undesirable features of a physical model. The following points out three reasons why causality violations, which Bonnor and Steadman identified even in solutions to the Einstein equation referring to ordinary laboratory situations, are not necessarily undesirable. First, a space-time in which every causal curve can be extended into a closed causal curve is singularity free—a necessary property of a globally applicable physical theory… 
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