1 / 6

Time-Travel

Time-Travel. The Altered Past Paradox. Back to the Future. Back to the Future. In BttF I , Marty travels back to 1955 and helps unite his parents. In BttF III , Marty travels back to 1855 and rescues Doc Brown.

dori
Download Presentation

Time-Travel

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Time-Travel The Altered Past Paradox

  2. Back to the Future

  3. Back to the Future • In BttF I, Marty travels back to 1955 and helps unite his parents. • In BttF III, Marty travels back to 1855 and rescues Doc Brown. • Marty helps unite his parents (in BttF I) before he rescues Doc Brown (in BttF III). • Marty rescues Doc Brown (in 1855) before he helps unites his parents (in 1955).

  4. Back to the Future • External time is the series of events as ordered by an objective historian. • Personal time is the series of events as experienced by a particular person. • A time-traveler is someone whose personal time diverges from real time.

  5. The Grandfather Paradox • If time travel were possible, it would be possible to kill your grandfather before your father is conceived. • It’s not possible to kill your grandfather before your father is conceived. • [So] Time travel isn’t possible.

  6. The Altered Past Paradox • If time travel were possible, it would be possible to change the past. • It’s not possible to change the past. • [So] Time travel isn’t possible.

More Related