Stratfor views the world through the lens of geopolitics , the study of hard, physical constraints on man's ability to shape reality. Political decisions are limited by the geography in which they take place, eliminating many of the options concocted by ideologues and making their human decisions easier to predict. But the study of geopolitics only takes the understanding of global affairs so far: It identifies the geographical constraints but leaves an array of options open to human actors. So when forecasting on a shorter time frame, analysis must go beyond geographical constraints to more specific, temporal constraints. For this reason, predicting the short-term activities of human actors requires an understanding of the constraints they face in the human terrain within which they operate.