Not that there's anything wrong with that. But it always has annoyed me when people say of a particular task "Well it's not rocket science (or brain surgery)."
Fact is, anybody of average intelligence could become a rocket science or a brain surgeon with the proper training and dedication.
Not sure I agree.
Rocket science depends on your ability to master "The Calculus". Medicine requires memory and is less dependent on math.
As an anecdote I remember getting my physical from a doctor prior to my being accepted for a position as an electrical engineer with the federal government (FAA) in 1975.
The doctor thought I was applying to the US Postal Service, as were most of those he examined. When he noticed that I was an engineer he said; "Oh... an engineer....you know that's what I wanted to become when I entered college....but I couldn't master the calculus....so I went to medical school instead.