Money is one of humanity’s greatest social innovations.  It’s been transformed in form and function for thousands of years and our digital age has accelerated that metamorphosis.  Banking institutions have also been changing dramatically with shadow banking taking over large swaths of the conventional bank credit marketplace.  Our guest, noted author and prominent leader of the Modern Monetary Network Dr. Rohan Grey, talks with Ellen and Walt about his design for digital eCash, the dramatic changes implied by MMT, and the emergence and importance of creating public banks.