90: Is Time Travel Possible?

90: Is Time Travel Possible?

Shows like Doctor Who and Star Trek have made time travel a staple of science fiction. And we all dream about time travel as well: can I go back and pick the winning lottery numbers? Can I go forward to see how my life turns out? But is time travel even possible, not just scientifically, but philosophically? That’s what I explore in this episode of Swimming Upstream.

Topics covered:

  • Two potential barriers: science and philosophy
  • Moving forward in time
  • Moving backward in time
  • Creating a “copy” of yourself when time-traveling
  • The Grandfather paradox
  • Creating a causal loop
  • Where are the time travelers?


Listen on Google Play Music