Continuity errors are invisible until they're embarrassing
A character's eye color changes between chapters. A city that was destroyed reappears three scenes later. A timeline that made sense in your head contradicts what's on the page. These errors slip past writers, beta readers, and even professional editors — because no human can hold an entire novel in working memory. Readers notice. Reviewers mention them. And once published, they're permanent.
Spell checkers catch typos. Grammar tools catch syntax errors. But until PlotLens, nothing caught the moment your protagonist’s sister changed names between chapters. PlotLens validates narrative continuity — the layer of consistency that makes fiction feel real.