of history, economics etc.
Doctor wrote:
"Anyone who is so dense as to have problems earning a decent living in this country should not go around impugning others capabilities! They are just embarrassing themselves."

Your comments were quite askance of mature experience -- of which you seem to have less than some might have expected. But you are no specialist in analysis of human affairs, and apparently are unaware there are phenomena in the realm of human affairs about which to BE expert or specialize.
Your comments simply show no depth at all.

I don't get the part about "impugning" either.
Me and Mr. Dictionary just don't understand words
the way Doctor does!