The "flow of information" through human communication channels is enormous. So far no theory exists, to our knowledge, which attributes any sort of u… - Anatol Rapoport

We must admit that it is extremely difficult to formulate a theory sufficiently general to encompass all possible sufficient causes of wars. With regard to necessary causes, however,... it is weapons. Without weapons wars could not be fought. We are told that, deprived of weapons, people would still fight with sticks and stones. This, however, need not concern us. We are concerned not just with fighting but with the sort of mass insanity that can destroy the entire civilization, the product of millenia of accumulated effort, in a matter of hours. And this can be done only with real, up-to-date weapons, not sticks and stones.

No map contains all the information about the territory it represents. The road map we get at the gasoline station may show all the roads in the state, but it will not as a rule show latitude and longitude. A physical map goes into details about the topography of a country but is indifferent to political boundaries. Furthermore, the scale of the map makes a big difference. The smaller the scale the less features will be shown.

Many psychologists, sociologists and especially anthropologists and psychiatrists raise serious objections against routine attempts to "extend the methods of the physical sciences" to the study of man. These objections cannot be dismissed simply on the grounds that they are not constructive; for inherent in the objections may well be a conviction that there can never be a "behavioral science" as scientists understand science. Whether there can be such a science or not will be decided neither by citing successful applications of "scientific method" to carefully circumscribed sectors of human behavior nor by pointing out what has not yet been done. Therefore on the question of whether a can in principle be constructed, we shall take no sides. That some kinds of human behavior can be described and even predicted in terms of objectively verifiable and quantifiable data seems to us to have been established.