The sequence is one created by you in relation to your experience and memory. Yes you might find the authors sequence useful if you have no knowledge of the subject. Still if you're activating with a purpose in mind you will fly over the information so that you pull up the information in a meaningful sequence to your purpose.
So if you are activating a novel to discover the mood of the story, you would fly through the pages dipping where it's meaningful and that way build an understanding of the overall mood. Same with Plot, location, theme and moral.
Purpose helps decide the sequence in order of importance to you.
Alex
