Unit tests have been compared with shining a flashlight into a dark room in search of a monster. Shine the light into the room and then into all the scary corners. It doesn't mean the room is monster free-–just that the monster isn't standing where you've shined your flashlight.

Every line of code not written is correct—or at least, guaranteed not to fail.

If you listen to your code, it'll tell you what you need.

Remember, code is your house, and you have to live in it.

Programming is not a zero-sum game. Teaching something to a fellow programmer doesn't take it away from you. I'm happy to share what I can, because I'm in it for the love of programming.