How to talk like a time traveler.
Many-Worlds Interpretation of Quantum Mechanics (MWI)
  • Wikipedia:  The many-worlds interpretation (MWI) is an interpretation of quantum mechanics that asserts that the universal wavefunction is objectively real, and that there is no wave function collapse. This implies that all possible outcomes of quantum measurements are physically realized in some “world” or universe …

    … The many-worlds interpretation implies that there are most likely an uncountably infinite number of universes. It is one of a number of multiverse hypotheses in physics and philosophy. MWI views time as a many-branched tree, wherein every possible quantum outcome is realised. This is intended to resolve the measurement problem and thus some paradoxes of quantum theory, such as the EPR paradox and Schrödinger’s cat, since every possible outcome of a quantum event exists in its own universe. 
Paradoxes of Time Travel
World line or Worldline 
  • Wikipedia:  The world line (or worldline) of an object is the path that an object traces in 4-dimensional spacetime. It is an important concept of modern physics, and particularly theoretical physics.  
Wormhole 
  • Wikipedia:  A wormhole (Einstein-Rosen bridge) is a hypothetical structure connecting disparate points in spacetime, and is based on a special solution of the Einstein field equations. A wormhole can be visualized as a tunnel with two ends at separate points in spacetime (i.e., different locations, different points in time, or both). Wormholes are consistent with the general theory of relativity, but whether wormholes actually exist remains to be seen. 
Multiverse 
  • Wikipedia:  The multiverse is the hypothetical set of multiple possible universes that comprise all of reality. 
Metaverse
  • Wikipedia:  Metaverse is the sum of all virtual spaces. 
       
  • Time Machine 
  • Krononaut or Chrononaut 
  • Krononautics or Chrononautics 

Time Travel Definition 
   

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  • Wikipedia
    • Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. 
        
  • Internet Encyclopedia of Philosophy
    • Time travel is commonly defined with David Lewis’ definition:
      An object time travels if and only if the difference between its departure and arrival times as measured in the surrounding world does not equal the duration of the journey undergone by the object. 
         
  • Krononaut Moon:  In these definitions, an object should be understood as including any signal, message or thought that travels to or influences an earlier or distant (disparate) point in time. 
     

Time Travel Paradoxes 
   

Time Travel Terminology (Krononautics) 
   

  • Many-Worlds Interpretation (MWI) of quantum mechanics
    • Wikipedia:  The many-worlds interpretation (MWI) is an interpretation of quantum mechanics that asserts that the universal wavefunction is objectively real, and that there is no wave function collapse. This implies that all possible outcomes of quantum measurements are physically realized in some “world” or universe … 
         
      … The many-worlds interpretation implies that there are most likely an uncountably infinite number of universes. It is one of a number of multiverse hypotheses in physics and philosophy. MWI views time as a many-branched tree, wherein every possible quantum outcome is realised. This is intended to resolve the measurement problem and thus some paradoxes of quantum theory, such as the EPR paradox and Schrödinger’s cat, since every possible outcome of a quantum event exists in its own universe. 
         
  • World line or Worldline
    • Wikipedia:  The world line (or worldline) of an object is the path that an object traces in 4-dimensional spacetime. It is an important concept of modern physics, and particularly theoretical physics.  
       
  • Wormhole
    • Wikipedia:  A wormhole (Einstein-Rosen bridge) is a hypothetical structure connecting disparate points in spacetime, and is based on a special solution of the Einstein field equations.A wormhole can be visualized as a tunnel with two ends at separate points in spacetime (i.e., different locations, different points in time, or both).Wormholes are consistent with the general theory of relativity, but whether wormholes actually exist remains to be seen. 
         
  • Multiverse
    • Wikipedia:  The multiverse is the hypothetical set of multiple possible universes that comprise all of reality. 
         
  • Metaverse
    • Wikipedia:  Metaverse is the sum of all virtual spaces. 
         
  • Time Machine 
  • Krononaut or Chrononaut 
  • Krononautics or Chrononautics