It's difficult to seriously debate with someone who seems to think that 'books' are the source of all evil, but i'm a bit of a stubborn bugger, so I'll try.
'Told face to face'....yes I was.
'read it in books'....not 'books', scientific journals. These contain the methods and conclusions of the original research. In order to be published in a scientific journal the work has to be 'peer reviewed' by other scientists who might not neccessarily agree with the writer.
I didn't say, and never have, that breeding 'worker to worker' you don't get workers. I said that I couldn't see a