I don't think I've read Cerventile's book. I've read Greg Green's "The Cannibus Grow Bible" but no bible by Cerventiles. To me he's nameless, so I can't really state an opinion on it.
Madazz, you can't have infallible logic based on how long someone has been doing something. People do their taxes for decades and still manage to fuck it up year after year. The point is, just because you've been doing something longer doesn't mean you're a genius at it. It just means you've had more hands-on experience. Besides, if anything, learning from other people's grows can be far more informative. It's pretty hard to compare grows over the years and no one wants to make a bigger mistake than the last time. It's only through other newer growers that we're so capable of figuring out what DOESN'T work or new ways to fix problems or do things easier and cheaper. If something works well and you've been doing it for years, you aren't suddenly going to change it for something that works worse. New growers however learn new tricks to compensate for their lack in experience and mistakes. By learning from other growers you can easily compare dozens of different grows at the same time. In general, other growers are just as (if not more) informative than yourself, simply because THEY are the ones trying new things without you having to waste your time, money, and energy. I respect those people that make small useful contributions to the art just as much as those that write multiple books.