A friend of mine just became a registered carpenter which involves hours of study and exams to learn the technical specs. He's now allowed to work on more deman

A friend of mine just became a registered carpenter which involves hours of study and exams to learn the technical specs. He's now allowed to work on more demanding and interesting projects and gets a pay rise, because his houses won't fall down because of using the wrong materials. My grandfather can build a hell of a woodshed but I wouldn't trust him to put together a 3-story townhouse.