[KaVir]

It's more like comparing an auto-generated book to each of:

1. A book full of blank pages.

2. A huge novel...with the same 5 pages repeated over and over.

3. A book written by a trained monkey.

4. A book written by some random guy off the street.

5. A book written by a decent author.

Number 5 is going to do a much better job than the auto-generated book, but how many of them are you likely to run into? Number 4 might do a better job, but there's no way to be sure. Numbers 1, 2 and 3 are going to produce worse results than the auto-generated book.

So what exactly does the option indicate? It certainly doesn't indicate quality.