But again, it must be reiterated: neither change alone nor fixity
alone can be the proper object of study by the functional analyst.
As we survey the course of history, it seems reasonably clear that all
major social structures have in due course been cumulatively modified or
abruptly terminated. In either event, they have not been eternally
fixed and unyielding to change. But, at a given moment of observation,
any such social structure may be tolerably well accommodated both to the
subjective values of many or most of the population, and to the objective
conditions with which it is confronted (1968, p. 95).