I agree with ysrebob. Not easy to do quality work all day. Easy to do crap. Poor work fails fast and needs to be redone. What new providers, dental students, and predents also fail to grasp is that not all teeth, patients, and tissue respond the way you would expect. Perfect endo fills can hurt. New crowns can break. Major connectors can break. Implants do not always integrate, and peri mucositis and implantitis are real things. Sometimes, the level of competency of the dentist is not determined by all the successes they have, but how they deal with the problems which arise.