Most writing is linear. A is before B is before C. Compare TWL to a
collage where any given image is next to a number of others and in an
excellent work of art any two pieces may influence how one looks at the
other. If a picture of a mother and child appears next to a war scene one
might think the placing was a contrast between war and peace while another
might see it as the sacrifice that may be needed to protect the family.
The placing of another image next to those two may change the thoughts yet
again. Examine some of the ways that Eliot manages to get us to see
different images all at once. Ambiguity of the way to read a line is one.
Having line X remind us of an earlier line Q and then influence the way we
read line Y is another.
P.S. - An inside joke for a few listers: I'm getting ready for the movie by
preparing to audition for the part of Phlebas.