What happened
Researchers analyzed 170 million Reddit comments over a decade and found that conspiracy theories don't just spread with different keywords — their actual meanings shift and evolve in measurable ways. This matters because it means tracking conspiracy narratives by looking for the same words misses how beliefs actually morph: a conspiracy theory can stay 'alive' while becoming semantically unrecognizable, making it harder to understand how false narratives persist and adapt online.
Why it matters
For the first time, researchers can measure how conspiracy narratives transform semantically rather than just counting which keywords appear, which reveals that conspiracy theories persist not by repeating identical claims but by evolving them — this changes how researchers and platforms might need to approach understanding and countering persistent false narratives.