Naomi is looking for bold new ideas, here's one:
Legal Tender is a legal contrivance, and when issued in the form of debt is nothing more than a pyramid/ponzi scheme. The quantification of debt wrongfully applies the algebraic concept of exponential growth - compounding interest - upon money. The distinction between usury and interest is an arbitrary legal determination with no basis in mathematics. Nothing can grow forever at an ever-increasing rate. As time moves on, the emphasis of ever-increasing growth becomes omnipresent, is quantified and institutionalized in the societal structure, encouraging over consumption, over development, and excessive expectations, pushing economic stress to its upper limit of expansion, eventually inciting conflict and spawning War to insure growth.
Economic systems of capitalism, communism, socialism, imperialism, colonialism, totalitarianism, fascism, nazism, monarchism, corporatism, and all other centralist monetary-isms maintain the monopolized control of money, and hence the control of society itself, through their own brand of Legal Tender that excludes other forms of money from the Market.