Paul (2007)

Paul, R. (2007). Language Disorders: from Infancy through Adolescence (3rd ed.). St. Louis: Mosby.

1st time to read: you never comprehend.
2nd time to read: you know more.
3rd and 4th time to read: you forget what you've read before.
5+th time to read: you remember that you've read before, but the details never appear in your repertoire.

when will be the time Paul (2007) becoming "everything they (I) ever want to know -- and then some -- about child language disorders" (Paul, 2007, p.vii)?