In a recent trend, phonologists are becoming increasingly aware of the fact that many phonological processes are variable (Labov 1972, 1994), gradient (Hayes 2000, Frisch et al. 2004), and full of exceptions (Zimmer 1969, Zuraw 2000). This is not only because variability, gradience, and exceptions have been shown to be par for the course for many lexical patterns in phonology, but also because ...