Interesting tips from Dana!

Does the term 'gel' mean there is a point when the comprehension skyrockets and the reader no longer wishes to spend more time with the book? I have read many times on the forum that this 'gel' effect usually occurs within 4-5 seconds and comprehension shoots up from about 40 % to about 90%?

Also, if this 30 min passes strategy applied on fiction, do they 'gel' as well, like non-fiction?

Thanks and Regards