The article talks about how complicated trade rules between countries are causing problems for developing nations. The researchers looked at rules that countries like the EU and the US use in their trade deals, and found that these rules make things difficult and expensive. They say that these rules are often unfair, forcing less wealthy countries to buy expensive products from wealthier countries. This means the benefits of trade partnerships mostly go to the wealthier nations. The researchers believe that these rules are too strict and need to change to be more helpful to developing countries entering the global market.