Philosophy
The Philosophy of Time Travel and Causal Loops
Quick fact
A causal loop has no beginning and no end—it's a self-contained chain of cause and effect where information or objects are never created, only recycled.
Why this is interesting
You've probably seen movies where a hero goes back in time to stop a disaster—but what if the disaster was caused by that very act? The idea of causal loops makes time travel suddenly philosophical, asking: can an event cause itself?