The philosopher Isaiah Berlin drew an important distinction between
"freedom from" (negative freedom) and "freedom to" (positive freedom).
For example, freedom from oppression and freedom to develop one's potential. By now, you must have understood your own limitations
of your "freedom from" in your own life.
My reply for the freedom of professor is implied in my answer itself.
Though there is more freedom for a professor to do research on
a topic of his choice compared to a scientist in a research organization,
availability of funds and equipment are problems. I wrote about the
limits imposed by Karma.
Mr. eclectic! If you think that there is constant restoration of
possibility and freedom, why don't you try for what I have written. Man
sitting on the bank can suggest any number of things. When he gets into
the deepest depths of the river, then he knows how much of what he has
suggested can be implemented practically with his own body. When
you go through some more suffering and past the peak energies of
youth-hood, your own suffering will teach you about your limitations.
Regarding logical arguments, I would like to remind you about
the limitations of logic:
In the 1930s, Austrian mathematician Godel proved a theorem which
became the "Godel theorem" in cognition theory. It states that
any formalized 'logical' system in principle cannot be complete
in itself. It means that a statement can always be found that can
be neither disproved nor proved using the means of that
particular system. To discuss about such a statement, one must go
beyond that very logic system; otherwise nothing but a vicious
circle will result. Psychologist say that any experience is
contingent - it's opposite is logically possible and hence should
not be treated as contradictory.
http://www.miskatonic.org/godel.html