I discuss a Modern Debt Jubilee On Macro’n’Cheese today, and this is a quick explanation of how it could be done.
Jubilees were common in antiquity. The Lord’s Prayer did not originally say “And forgive us our sins, as we have forgiven those who sin against us”, but “And forgive us our debts, as we also have forgiven our debtors”. But an old-fashioned Jubilee would reward those who gambled with borrowed money, and thus effectively penalise those who did not. It would also effectively bankrupt the banks, since their assets—our debts—would fall, while their liabilities—our deposits—would remain constant.