I wonder who qualifications, Edison, Einstein, D Vinci et al had in order to be called engineers. Sorry but I don't agree that you need to have a degree and a masters and the five circles of mother nature in order to be an engineer. The dictionary defines and engineer as:
NOUN
1 a person who designs, builds, or maintains engines, machines, or structures.
• a person qualified in a branch of engineering, especially as a professional.
2 a person who controls an engine, especially on an aircraft or ship.
• a train driver.
3 a skilful contriver or originator of something.
So the little guy in his workshop skilfully contriving or originating is just as much as an engineer with a fancy degree. Its those little guys, the home engineers that are the foundation of some of the greatest devices mankind has........