One of my presentations are the January Sustainability Conference in Adelaide focused on the basics of Modern Monetary Theory (MMT). I was asked by the organisers to provide some clarity on the basics of MMT and to demarcate where MMT starts and finishes. I started the first of two talks I gave at that conference by stating that MMT was macroeconomics. It is within that discipline. It is not within the discipline of law, sociology, psychology, cultural and media studies etc. Macro is macro. I subsequently received a lot of correspondence about this and have had subsequent follow-up conversations with some MMT activists about the meaning of the ‘categories’ I introduced. I thought it would be useful to write an extended account of what I was thinking when I said those things. It will help clarify what I see as the difference between MMT and the MMT Project. You can see exactly what I said if you want to watch the video of the presentation. But, of course, that doesn’t necessarily mean you will ‘know’ what I meant. So this blog post seeks to clarify some of those comments so that everyone explicitly understands what I was talking about. This is Part 1 of a two-part series (split because of length). In Part 1, I discuss the idea that MMT is macro. In Part 2, I discuss what I call the MMT Project and other issues that seem to cause confusion and/or concern.