Programmers routinely "refactor" code, clarifying its purpose & reorganizing its structure without changing how it works. What else can be refactored, I wonder?

-Links for the Curious-

http://cseweb.ucsd.edu/~wgg/Abstracts/gristhesis.pdf

http://www.laputan.org/pub/papers/opdyke-thesis.pdf

http://wiki.c2.com/?WhatIsRefactoring

http://wiki.c2.com/?DocumentRefactoring

http://wiki.c2.com/?RefactorMercilessly

https://proxy.c2.com/cgi/wiki?WikiRefactoringSummary

http://wiki.c2.com/?CircularRefactoring

https://www.youtube.com/watch?v=s-CTkbHnpNQ

https://www.ribbonfarm.com/2012/05/31/the-art-of-refactored-perception/