What Is a strategy? The answer to this question ought to depend on the
foresight horizon: how far ahead, and how much, the strategist thinks
he can foresee, When the very structure of the firm's world is underg
oing cascades of rapid change, and interpretations about the identity
of agents and artifacts are characterized by ambiguity, we say that th
e foresight horizon is complex. We argue that strategy in the face of
complex foresight horizons should consist in an on-going set oi practi
ces that interpret and construct the relationships which comprise the
world in which the firm acts. Our discussion focuses on two intertwine
d kinds of strategic practices. The first is cognitive: a firm 'popula
tes its world' by positing who fives there and interpreting what they
do. The second is structural: the firm fosters generative relationship
s within and across its boundaries-relationships that produce new sour
ces of value which cannot be foreseen in advance. We illustrate the id
eas advanced in this article with a story about the entry of ROLM into
the PBX market in 1975.