Ever since it began its academic career sociology has approached its o
bject in two different ways, with a positivistic and with a critical a
ttitude. Important theories, for instance that of Karl Marx and that o
f Emile Durkheim, preferred the one or the other side of this distinct
ion but could not exclude its counterpart. Sociology became empirical
with an interest in latent structures or critical with an interest in
incongruent perspectives which explain that social reality differs fro
m its appearance. Any attempt to unify a theory of society in spite of
this guiding distinction would have led to a paradox: frontstage and
backstage, manifest and latent structures would have been presented as
if the same. Under these premises it was not possible to develop a th
eory of society which satisfies both scholarly and public expectations
. At present, this situation seems to be changing in radical ways whic
h sociology itself is not yet aware of. Interdisciplinary discussions
propose theories of self-referential systems, autopoietic closure, the
second order cybernetics of observing systems and constructivist pres
uppositions of information processing and cognition which could be use
d to understand society as a self-observing system which defines its o
wn identity and by this very self-description creates an ,,unmarked sp
ace'' which may be used to distinguish and describe the system in a co
mpletely different way.