It goes the same way

and the professor says Hegel,
I understand, is a difficult
read, that
Derrida, afraid, couldn't
count the times he revised
his work on Hegel. Hegel 
anticipating our responses
still 
two hundred years later.
No change then, this 
phenomenon that is ourselves. 

What does it mean, this line?

The room remains quiet. 
Graduate students now past 
the courage of teenagers
(who saw futility 
on first day and left)
wrestle within themselves.
Mostly looking away.

Karl and Mao, Fanon, Butler...
The professor, his 
three translations
and pocket German.

The room where empty chairs
outnumber the class
below the first floor
where one entire wall is
glass windows looking straight
at an unpainted concrete wall.

What does it mean, this line?