The biggest ideological debate in monetary reform seems to be between Modern Monetary Theory (MMT) and the various ideas for sovereign money/100% reserve banking. Positive Money is in the latter camp. MMTers discard such ideas because they believe with proper regulations and controls the current system offers all we need. Which it can, except when you start to think about growth. Our debt-based monetary system is a product of economic thinking that aims for infinite exponential growth (paradoxically in a finite system). Ensuring most money is debt also ensures people must always work more, productivity must always increase, new resources must always be found and extracted, and new consumers must be constantly created (either through birth or immigration), otherwise debts can never be repaid and the system implodes. But it begs the question: is a debt-based monetary system inherently incompatible with a sustainable circular economy? The Answer is clearly "Yes", all we need to do is to look around at the many projects that make absolutely no sense from an environmental perspective. The oil industry is a prime example of this madness.