Hi
Sharing my view on this.

Lets look at it this way.

Purpose-1:what do you think you will get from the book.Probable answer to save and invest wisely,protect your wealth .Done. you have met your purpose.

Purpose-2:ace in test? you will need to know everything as they can ask you anything.So read everything.????

Purpose-3:so whenever you want to find what you need you will find it and understand it whenever you need it!!! simple.

So what will you do now??So far you were posing questions so its upto you to answer !

Let me ask you,what if you really wanted to read "a" book what would you do .What if you wanted to understand the book so that you use the ideas in the book practically day to day
?
What would your purpose be?Purpose is motivational.Dont analyse purpose too much ,does your purpose help you to get around your book.How do you know,if you are not frustrated with your activation then you have a good purpose---thats my way of seeing it.

Let me explain:
Suppose you need to do 20 activation sessions to know a book and you do it and you are not frustrated ----now thats great thats a yardstick that you want to know cause you want to know!!!

At the same time you activate a book once and you get an idea what the book is about and you are done and look at your yardstick again ----no you are not frustrated cause with the given time and resources you did what you wanted then fine

now lets look at it in another way suppose you wanted to know a book at great depths and multiple activation sessions are still not getting it and you are frustrated ,now thats a good frustration what do you do?photoread multiple books on the subject,meet professionals and teachers in the subject dig ,dig for answers and get the book at last and it was worth it ---thats great you have a purpose

so dont get frustrated around whether you have a right purpose but see if your purpose helps you handle your frustration.
Its other way round---get frustrated enough to know and want to activate.

Hope you get what i am trying to convey.Use purpose to motivate to activate or not activate.Photoreading works when you have a motive---stronger the better.

Thats why you end your Photoreading session affirming"i am curious to know in how many ways my mind and body will make this information available to me"

Its about focus and motivation.

Cheers!!!