At this point, the world's climatologists are agreed.... Once the freeze starts, it will be too late.

Douglas Colligan, "Brace Yourself for Another Ice Age," Science Digest, February 1973.

Why is wicked complexity so difficult to manage? Well, to begin with, the systems giving rise to the problem cannot be definitively described or defined. Drawing boundaries around such systems is necessarily arbitrary; any effort to define the system thus oversimplifies other aspects of it, and downplays or ignores critical couplings between what you have defined and other, external factors.

Or consider a more topical example. Virtually everyone is aware of global climate change, which vies with terrorism for billing as the top existential catastrophe. Stand away from the Kyoto Protocol process and the surrounding hysterics pro and con, however, and take a longer perspective. What the climate change negotiation process taken as a whole represents, fitful and ad hoc as it is, is the dawning of a realization that, regardless of what results from current international negotiations, our species will be engaged in a dialog with our climate, our atmospheric chemistry and physics, and the carbon cycle so long as we exist at anywhere near our current numbers on the planet.