As the question states, what time travel theory does Futurama follow?
Some Time Travel Theories:
- Going back in Time then changing the Future creating a Paradox in which the event never happened resulting in the event going back in Time never happening therefore nothing changes(newest episode)
- Going back in Time to another Time-Line, able to do whatever without creating a paradox of the 1st theory I stated (similar to time-travelling so far into the future, that the Professor/Fry/Bender went into another universe or Fry's grandfather paradox?)
- Going back in Time, resulting in whatever you do will always happen(Bender destroying the 23rd(?) century when he stole a peace grant from Sweden between East and West side)
Which theory does Futurama follow?