Keywords: Scientific truth, abduction, disunity of social science, purpose in scientific research, biology.
Professor Micheli's systematic unfolding of the concept of "Gestalt switch" and its
use to outline different definitions of context, linked to different theories of action, speaks for
itself. Rather than discussing it further, I focus on other ideas in his paper dealing with the
nature of social science and of social scientific knowledge - ideas which seem to me to need
more widespread recognition. These deal with: truth; disunity; variable analysis; abduction. I
also comment on two ideas whose discussion - or at least mention - I would have welcomed:
biology and human behavior; purpose of investigation as a criterion for judging the quality of