This document is a presentation by John Mauldin on unsustainability and transition. It discusses how things that are unsustainable will change. It identifies areas of current unsustainability as including high debt levels, unbalanced government entitlement programs, and pension and healthcare costs in countries like Japan, Europe, and the US. It advocates investing in areas that are sustainable, like technologies that create abundance at lower costs and serve basic human needs in adaptable ways. The presentation covers economic theories around sustainability and transitioning to a new paradigm.