I am studying computer engineering and have a lot of trouble when it comes to algebra and calculus.
Math books are not like other type of books, you just don't get much from previewing, at least not me because I don't get much understanding out of a math book.
Today I went to the library and used just the photofocus step with about 20 math books.
If photofocus really gets information into your subconscious mind and there really is a preconscious processing then when at school the teacher explains some of the topics I have photoread I should have a big advantage, shouldn't I?
Is this "photofocusing-a-lot-of-books-one-after-another" of any use? what do you think?