Why are Dr.'s held in such high esteem? The human body comes in only two models,jeezlaweez,how many things can be wrong;plus the fact the person can verbally speak their ailment(s). Now a mechanic has to have a working knowledge of 100's of vehicles & their individual shortcomings;plus the fact that the individual who drives said automobile has zero clue as to what their vehicle is doing or not doing: Yea,the wheel makes a clicking sound when turning; this is an example of zero awareness.In summary a 'mechanic' is perhaps THE most important trade in the country. Hug Your Local Mechanic.