This means that Japan also had a great pioneer in the economic analysis of climate change. I believe that it is our responsibility to follow Professor Uzawa's lead, to open up new frontiers in financial and economic analysis using currently available analytical tools and data, and to implement better policies based on the knowledge gained.
Central banks could stop issuing cash and shift to just providing an electronic claim on the central bank. In principle, the introduction of central bank-issued digital currency or digital base money (DBM), as I have called it, would be much easier and potentially less expensive than ten years ago. 2/3  BIS central bankers' speeches  But the challenges go beyond the technological sphere.