I am seriously trying to understand "modern monetary theory." A friend who is doing the same recommended this book to me, on the grounds that it is short and clear. It is short, and it is quite clear, but it was still a little over my head. I think it was helpful to me in grasping more of the basic concept (which is, very roughly, that governments that issue money must operate at a deficit, because the government deficit is what makes money circulate in the private sector). If the MMT theorists are correct, the whole "balanced budget" argument for national governments is completely wrong-headed.
Mosler is a money man, and not at all a political radical. He thinks clearly, defines his terms, shows his work, and is quite convincing. I just need to understand more of the underlying system to make up my own mind.
I am more and more coming to beliee that money is almost entirely fictional, and all the questions about money are really "why do people believe this?" and "what will change what we believe?"