All pages
The “all pages theory” does not refer to a widely recognized or established theory in the field of academia or science as of my last knowledge update in September 2021. It is possible that such a theory has emerged or gained prominence after that date, or it could be a term specific to a particular niche or context that is not widely known.
If you have more context or specific information about what the “all pages theory” pertains to, please provide additional details, and I will do my best to provide a meaningful response based on the information available up to my last update.