The Fear of Publishing a Book Full of Hidden Errors
Most word processors run a spellcheck automatically, so it is tempting to assume that is enough. It is not. Spellcheck tools compare individual words against a dictionary. They cannot tell you that "complement" should have been "compliment", that a comma splice has changed the meaning of a sentence, or that your protagonist was introduced as thirty-four years old in chapter one and thirty-nine by chapter six with no explanation. These are the errors that slip through a manuscript that looks, on the surface, perfectly clean. Authors who rely solely on automated checks often discover these issues only after publication, usually from a reader.