
225
Chapter 20
Example: Drug
Repurposing
C
variety and detail—the number of dierent
molecules you can create with dierent combinations of elements in
dierent congurations is practically endless. Biology is extraordinarily
complex—each organism is an integrated machine containing billions of
parts that act in both regular and irregular ways that are more stochas-
tic than deterministic. Put biology and chemistry together and you have
pharmacology: the study of how drugs aect organisms. It is not a disci-
pline for the faint of heart (or mind).
When you think about all that complexity, it is really no wonder that it
takes dr ...