You can use them all. It just changes how you would approach activation.
For example for the first purpose I would use syntopic reading. Find systems that work and what didn't compare them to others that came close and why not.
The 3rd purpose is one that kick starts the whole process it gives you the reason to open trading books in the first place.
Remember your purpose is not set in stone. It's a path to your destination. So it can change with each activation layer. If you discover the author has some juicy information that you haven't thought of before, and it strikes you is interesting, then you would want to find out more. In purpose would become, to learn more, so that I can find out if this will serve my trading business. If it does, you probably find yourself changing your purpose again, to be more specific.
Alex
