  This preprint is an exploration in how a single mathematical idea - entropy -
can be applied to redistricting in a number of ways. It's meant to be read not
so much as a call to action for entropy, but as a case study illustrating one
of the many ways math can inform our thinking on redistricting problems. This
preprint was prepared as a chapter in the forthcoming edited volume Political
Geometry, an interdisciplinary collection of essays on redistricting.
(mggg.org/gerrybook)
