Most readers wouldn’t likely notice a minor change, and the ability to edit almost instantly makes it easy for authors, or anyone else with access to the body of work, to quickly make updates and corrections. Continual revision would benefit textbooks, for example, which require constant updating to reflect current knowledge.
But as with other forays into the digital realm, electronic publishing’s benefits come with some drawbacks. Printed books traditionally serve as reliable historical records, but if authors and publishers maintain the power to alter e-books periodically to make them more commercially attractive to consumers, the texts’ validity such texts could be compromised.
For example, a book that doesn’t do as well as expected by its publisher may be changed according to consumer feedback. Chapters might be added or deleted, or an unpleasing ending could be modified. If a book can be continuously changed, it isn’t really ever complete, and may not be a reliable reference.