Blog Journeys of a Lifelong Learner

Programmers who have moved into the realm of understanding always suspect their own work first because they know that they cause 95 percent of errors. Understand the role of each line of code and why it’s needed. Nothing is ever right just because it seems to work. If you don’t know why it works, it probably doesn’t—you just don’t know it yet.

Bottom line: A working routine isn’t enough. If you don’t know why it works, study it, discuss it, and experiment with alternative designs until you do.

Steve McConnell in Code Complete