Part 1 of 5 · freeIntroduction
World debt, that of states, companies and households combined, now goes beyond 300% of world GDP, an absolute record in economic history.
That impressive figure hides a more subtle reality. Debt pays for growth, for the answer to health crises, and for the green transition. But it also carries the risk that confidence collapses.
The rest is in the Sophia app.The remaining parts, the open-book quiz and the full glossary. Free to start; Premium unlocks everything.
- 2How a state goes into debt
- 3Not all debts are equal
- 4Can debt be infinite?
- 5The new faces of debt
Open-book quiz9 questions whose answers are in the text.
Glossary7 terms explained in a tap.
30 languagesThe same course, from French to Japanese.





