Thanks, Sandy, AlexK,
I would just like to point out that what is natural is often very painful and difficult. Birth and death come to my mind as very natural happenings.
Since most of us are not taught to Photoread as children, an adult has to unlearn the slower way they were taught to read as a child. Unlearning childhood habits can be extremely difficult and painful.
I guess it depends on the individual person. If someone reads by subvocalizing in their primary language for 20 years they have a lot of work to do overcoming that. As an adult, that same person could learn a second language and never develop that habit of subvocalizing in the second language. It depends.
