Closed Timelike Curves vs Wormholes: What’s the Difference?
Closed timelike curves vs wormholes: one is a path through spacetime, the other a hypothetical shortcut. Learn how they connect to time travel.

Closed timelike curves vs wormholes: one is a path through spacetime, the other a hypothetical shortcut. Learn how they connect to time travel.

Read The Silent Guardian by Dylan Callens online: Chapter 17, Part 3, “Indoctrination.” A serialized time-travel science fiction installment in The Silent Guardian Series.

Seven bootstrap paradox movies and TV stories where information, objects, or events become trapped in time loops with no clear beginning.

Read The Silent Guardian by Dylan Callens online: Chapter 17, Part 2, “The Doctrine.” A serialized time-travel science fiction installment in The Silent Guardian Series.

Compare the grandfather paradox with the Novikov self-consistency principle and see how fixed timelines avoid contradictions in time travel.

Read The Silent Guardian by Dylan Callens online: Chapter 17, Part 1, “Rasha.” A serialized time-travel science fiction installment in The Silent Guardian Series.

Predestination paradox vs bootstrap paradox: learn how self-fulfilling events differ from originless objects, ideas, and information loops.

Read The Silent Guardian by Dylan Callens online: Chapter 16, Part 2, “The Renegade Commune.” A serialized time-travel science fiction installment in The Silent Guardian Series.

Can the Casimir effect create negative energy for time travel? Learn what the real quantum effect does—and why it is not a practical time-machine technology.

Read The Silent Guardian by Dylan Callens online: Chapter 16, Part 1, “The Kidnapping.” A serialized time-travel science fiction installment in The Silent Guardian Series.