Exactly. But knowing what worked for Portugal is just one clue. It's also important to have an understanding of why it worked, identifying other factors that could have contributed, ways the policy can be improved, how effective it would be if implemented in vastly different countries ways to adapt policies to those countries, and even expand the concept beyond drugs.

Imagine a country is going through terrible times and decides to implement some radical austerity measures, sell public companies, defund public services, do all the stuff the IMF loves. Or maybe the opposite, the country nationalizes everything and expels all foreign companies. Let's say a decade or two later the country starts really prospering. It would be unwise to assume this is just universal without proper understanding the mechanics of what happened.