Two Pax Americana timescale elements: - Technological progress has increased worldwide interdependence, to the point of destroying resilience. The world is one

Two Pax Americana timescale elements: - Technological progress has increased worldwide interdependence, to the point of destroying resilience. The world is one vulnerable system now to a much larger extent than any time in the past. Think Ukrainian grain exports to the North Africa. Hundreds of millions have grown to rely on that. Hardly even technologically possible 100 years ago. - Physical limitations to economic growth. Technological progress has made humans increasingly expert at exploiting natural resources on an ever larger scale. The same cannot be said of management of negative externalities. In other words, we can probably manage peak oil. Peak water? Less so. Global warming? Do you see a way out of that?