Snake oil came first. By a likely ~ +50k years

It appears all I have to do is utter the words ordinary man and poof! Glubson shows up. Coincidence?

"...utter the words ordinary man and poof! Glubson shows up."

Opposites attract.

teo-audio: you indicated in your OT:

Study suggests shamans acted as the first professional class in human society

The first professional class, i.e., professionals providing specific services, is not the same thing as professionalism, which is the competence or skill of A PROFESSIONAL.

Two very different things.

We were told in ROTC that historically the idea of professionalism started with the military officer class. Not sure if this is true. But at the time of the development of that concept that particular class was surely putting it all on the line for their calling. It was not just training and a standard of conduct, it was putting your life on the line too.

Something like that is likely true when it comes to the record in formalization.

engineering is born out of middle ages bombmakers for warfare. The original bombs came about when gunpowder finally appeared in the west. 

then the dangerous job of the bomb maker or 'engineer' arrived as a descriptive. He makes engines. Engines of war. (devices of war)

The term 'hoisted by his own petard', is in reference to engineers who blew themselves up.