I identify two very different types of debt:
- towards human creditors, or
- towards natural or social phenomena.
Debt towards human creditors is the most visible form of debt. It is recorded in public or private accounts, and is the purpose of active monitoring, in order to ensure that the debtor keeps a sustainable capacity to pay the creditor back. The rights of creditors are defended by national and international law.
However, debt towards humans is not as hard as what could appear prima facie.