This video is a very simple to understand explanation of why the World Economy will not be able to continue on as it has been. Imagine a football with a large inverted triangle balanced on it, made of glass. When the top end of the triangle gets too wide and heavy, as it is now, the whole thing will tip and shatter. It's far better that we have a "controlled transition" by way of vehicles such as the OPPT process, than to 'crash and burn'. To let the World Economy teeter on as it has been will inevitably push humanity forward into certain disaster. Let's look at the alternatives... The alternative of OPPT seems to be having very positive outcomes. It deserves our greater attention.
Derivatives: Why we WILL Collapse - No Way Out Now.