Unit Test

"Put it another way, skipping unit tests is faster, unless you actually need the code to work."

"Just remember, people don’t buy into something just because they want it or because it sounds good. They only buy in when they’re desperate, when they need it so badly that they can taste it. "

http://sd.jtimothyking.com/2006/07/11/twelve-benefits-of-writing-unit-tests-first/