Bootstrap Paradox

Tag Area: Time Travel Trope
Short Story

“—All You Zombies—”

A 25-year-old man, originally born as an orphan girl named Jane, tells his story to a 55-year-old bartender who then recruits him for a time-travel adventure. —Michael Main
When I opened you, I found a mess. I sent for the Chief of Surgery while I got the baby out, then we held a consultation with you on the table—and worked for hours to salvage what we could. You had two full sets of organs, both immature, but with the female set well enough developed for you to have a baby. They could never be any use to you again, so we took them out and rearranged things so that you can develop properly as a man.
A man wearing only a skirt stands on a spaceship while firing a ray gun upward at another ship.
  • Science Fiction
  • Definite Time Travel
Novella

Ransom

Time travel agent Maks Hamilton is told by mysterious kidnappers that if he ever wants to see his own son again, he must travel back three centuries—just before the Troubles—to abduct another boy.

Despite the characters’ belief that they can change history, up in the ITTDB Citadel we all agreed that the characters are an unreliable source and this story actually lives in a carefully crafted single static timeline along with a nice bootstrap paradox. —Michael Main
I want you to bring someone from the past to the present—someone who would otherwise die only a few hours afterward. Surely that’s possible.
A spiral galaxy looms large behind a nighttime desert scene.
  • Eloi Silver Medal
  • Science Fiction
  • Definite Time Travel
Animated Feature Film

Monster High, Movie #10

Monster High: Freaky Fusion

The animated gang of teen monsters travel centuries into the past to the first day ever at Monster High, but when they return they have each merged with another in the group creating freaky hybrid monsters all around. I’m not sure, but I’m betting that Mattel used this DVD release as an opportunity to also sell freaky hybrid fashion dolls. —Michael Main
It’s 1814: They’ve never seen fashion styles like ours before.
Green-skinned Frankie Stein and two of her fellow-students pose in front of a time portal.
  • Fantasy
  • Audience: Children
  • Definite Time Travel
Nonfiction Book

Paradoxes of Time Travel

Ryan Wasserman’s philosophical book is one of two books* that need to live on your nonfiction shelf. One by one and with complete reference to the past literature, he presents all the major paradoxes of time travel along with different models of time travel and arguments against time travel even being possible. Just get it and read it cover-to-cover. As a bonus, Professor Wasserman, who is on the Philosophy faculty at Western Washington State University, will cheerfully have discussions about time travel issues via e-mail with those of us up in the nearby ITTDB Citadel.

* The other, of course, is Paul J. Nahin’s Time Machines: Time Travel in Physics, Metaphysics and Science Fiction, Second Edition. —Michael Main
Each of the foregoing cases involves a self-defeating act—an act such that, if it were performed, it wold not be. Self-defeating acts are obviously impossible, since the performance of such an act would imply a contradiction. Yet time travel seems to make such acts possible. This suggests the following line of argument against backward time travel:

(P1) If backward time travel were possible, it would be possible to perform a self-defeating act.

(P2) It is impossible to perform a self-defeating act.

(C) Backward time travel is impossible.
A descending spiral of Roman numerals in the style of a clockface.
  • Eloi Silver Medal
  • Nonfiction
  • Definite Time Travel
Short Story

Quantifying Trust

  • by John Chu
  • in Mother of Invention, edited by Rivqa Rafael and Tansy Rayner Roberts (Twelfth Planet Press, September 2018)
AI grad student Maya is attempting to train her prototype artificial neural net (named Sammy) so that it recognizes what to trust and what not to trust on the Internet, with the goal of building AIs free of human prejudice. Meanwhile, that new grad student Jake keeps saying and doing things that seem only to verify his ongoing joke that he’s an AI from the future. —Michael Main
You got me. I’m an android sent back from the future.
The bust of a black woman in colorful garb and a brace to enlongate her neck.
  • Eloi Honorable Mention
  • Science Fiction
  • Debatable Time Travel