Because it's serious and critical

[Terrance]

http://www.tau.ac.il/humanities/publications/poetics/art/mod6.html

There are three variants of this recurrent concreti-
zation-deconcretization structure, depending upon the nature and
location of the indicators of unreality. In the least problematic
variant, 7 This experience of the reader's in Gravity's Rainbow is
anticipated by Pynchon's earlier novels. The career of V. in the
novel of that name is an imaginative projection by one Herbert Stencil
on the basis of doubtful and fragmentary information. The information,
we are told (Pynchon, 1964:211), has been "Stencilized": "Around each
seed of a dossier [ ... ] had developed a nacreous mass of inference,
poetic licence, forcible dislocation of personality into a past he
didn't remember and had no right in, save the right of imaginative
anxiety or historical care [ .... ] The rest was impersonation and
dream" (Pynchon, 1964:50-51). In The Crying of Lot 49, the ontological
embarrassments are transferred to the heroine,
Oedipa, something of a literary critic herself....