all they know is how to lecture, by preference about subjects of
which they are ignorant.
for example, they do not know the difference freedom of speech
and academic freedom.
academic freedom protects professors from losing tenure or from
other disciplinary measures.
freedom of speech protects all individuals against intrusions
of the government when said individuals want to express
freely their opinions on any subject. of course, there are certain
well defined limits to freedom of speech, such as the prohibition
on using violence or threat of violation to express speech.