Here's the final paragraph for those who want to know if this is worth reading:

> The real solution, as I have argued elsewhere (and as many people have argued, back to Keynes at least) is for central banks to intervene at many more points in financial system. They have to set prices of many assets, not just one overnight interest rate, and they have to direct credit to specific classes of borrowers. They have to accept their role as central planner. It is the need for much more conscious planning of finance, and not crypto currencies, that, I think, is the great challenge and opportunity for central banks today.