When I read a book I critically evaluate the content (teaching) with my experience.
It may be present or past experience.
May be contemplation on past experience is not come under strict Vipassana meditation. (even if we think something is present it is actually the past)
I think reading a book requires some form of momentary concentration.
I also consider reading a book as some form of experience.
(4) Contemplation of Phenomena (dhammanupassana)
In the context of the fourth foundation of mindfulness, the multivalent word dhamma (here intended in the plural) has two interconnected meanings, as the account in the sutta shows. One meaning is cetasikas, the mental factors, which are now attended to in their own right apart from their role as coloring the state of mind, as was done in the previous contemplation. The other meaning is the elements of actuality, the ultimate constituents of experience as structured in the Buddha's teaching.http://www.accesstoinsight.org/lib/auth ... d.html#ch8