Well, as of right now, the only way to pay for a good is to pay for it with another good or service. As before, money is merely the accounting of debt. It only

Well, as of right now, the only way to pay for a good is to pay for it with another good or service. As before, money is merely the accounting of debt. It only signifies a promise to provide a good or service in the future. You aren't really paying for something with money, you are delaying payment with a promise to actually pay later. Given that, why do you think debt is necessary in the hypothetical future situation that was presented?