Oh complete tosh. Most of my Physics, Mathematics and Electronics textbooks have notes to the effect that the author welcomes mistakes being reported to the publisher. I work in secondary education, have done for 19 years, and the school textbooks are often similarly expected to have mistakes with teachers and students encouraged to report them.
Of course they go through editing, proof-reading....and yet mistakes still get through especially in new or first editions of a book. I am sure that Film Ferrania tested P30 Alpha before manufacturing the batch that they sold. Indeed their website chronicled the initial testing by Nicola, I believe.
Additionally, I was not saying that academic books are alpha products.....I said "one might also add books"....it's another example of an industry where it is accepted that imperfect products will be released and the users are encouraged to report the imperfections by the manufacturer/publisher.