A very good article, thanks. Yes QE appears to have only helped increase asset prices and not everyday wages, which is probably why inflation hasn't been a problem. With interests rates already low central banks are very limited in what they can do in the next recession. I wouldn't be surprised to see European and possibly even the US adopt negative interest rates, which are easier to enforce now we are moving to a cashless society. The following IMF blog post discusses negative interest rates. I'm really not sure on the potential impact of MMT. I guess it's certainly something that can dig a floundering economy out of a hole... but for how long?
[https://www.google.co.uk/search?q=imf+negative+interest&oq=imf+negative+interest+&aqs=chrome..69i57.6599j0j4&sourceid=chrome-mobile&ie=UTF-8](https://www.google.co.uk/search?q=imf+negative+interest&oq=imf+negative+interest+&aqs=chrome..69i57.6599j0j4&sourceid=chrome-mobile&ie=UTF-8)