I've run a across a handful of people with new ideas on economics. They really can't explain it and get annoyed when I say don't understand it. I'm also quite candid in that I don't fully understand the basics of MMT yet, so my ability to grok their ideas might be limited. They retort that MMT really isn't a theory and their system is easier to understand.

Recently, I ran into a fellow who made a reasonable attempt at explaining how crypto currencies could pave the way to a hydrogen (or energy) based currency. Since I am a little biased to using hydrogen as a currency, I guess I kind of understood his thinking, but I do have a bias that was formulated without a lot of study.

BTW, I understand cyptocurrencies a lot less than MMT.