Is one method actually better than the others?

1) Making a blip page and hence diverging the eyes, or
2) Normal vision, but making sure you can see the four corners of the book - i.e. enlarged field of view

Paul says in his book that many photoreaders never manage to get the blip page. Hence, I wondered why would he even bothers to teach the blip page because it's blatantly much more difficult to explain and practice.
Unless... the blip page method is actually the better method of the two

So my question is - is the blip page the best method?

AJ