People use many different types and levels of knowledge structures when they do even simple tasks like understanding what someone tells them. When you read a book, for example, you have built up expectations about what will come in the next sentence from structures that contain what you know about (among other things) the ways paragraphs are typically organized, the way an intellectual argument is structured, and your views about what has been said so far. Under the warehouse model, some mysterious process requisitions the appropriate model when needed. The knowledge itself is static and passive.
However, when you read, you can always learn something about each of the varied types of knowledge you are applying. You can learn a new word or a new fact or a new opinion or a new way of presenting an argument. It does not make much sense to consider your memory a site of passive knowledge when this knowledge behaves so actively, each piece always trying to align your experiences with itself and modifying itself when needed.
The Dynamic Memory View
Where am I in the content of the book?