Power needs to erect an identifiable object in order to exercise it's control over it.
Knowledge, even in its positive aspects, involves exclusions and repressions of all kinds.
It is the exercise of power by other means.

The sickness of man is nothing but his individuality, an untenable construction that requires a continual libidinal investment onto repression.

(Semiotexte, Anti-Oedipus, Sylvère Lotringer, 1977)