We can distinguish it. That's what publishers and editors do. It's also what book buyers for book chains used to do. Reviewers, writing for reputable publicatio

We can distinguish it. That's what publishers and editors do. It's also what book buyers for book chains used to do. Reviewers, writing for reputable publications, with their own editors and publishers, as well. Humans, examining things, and putting a reputation that matters on the line to vouch for it. The fact that Amazon doesn't want to have smart, contextually aware humans look at and evaluate everything people propose to offer up for sale on their storefront doesn't mean it can't be done. Same as how Google doesn't want to look at every piece of content uploaded to YouTube to figure out if it's suitable for kids, or includes harmful information. That's expensive, so they choose not to do it.