Exactly. Good clients will understand "hey, this guy just saved us $150k". Bad clients will think "I just paid a programmer to do nothing!" Learning to recogn

Exactly. Good clients will understand "hey, this guy just saved us $150k". Bad clients will think "I just paid a programmer to do nothing!" Learning to recognize and get rid of those bad clients (or convert them into good clients) is a skill that can take a while to learn.