Just last night I PhotoRead 3 books on writing. I plan to activate only one of those books.
Activation, of some kind is usually beneficial for a higher degree of comprehension. However, with each set of books that you go through in PhotoFocus, you'll feel the information starts to get easier to go through, remember, etc. The knowledge feels older and more known - thus, your speed increases.
That's one thing I feel starting to happen.
