The study looked at how the amount of money Indonesia owes to other countries affects its economic growth. They used data from 2000 to 2015 and found that when Indonesia borrows more money from other countries, it doesn't really help the economy in the short term. But in the long term, having a lot of debt can actually slow down economic growth. This means Indonesia needs to be careful about borrowing too much money from other countries to avoid problems with its economy.