[dhfbshfbu4u3]

Not in the least. Those two variables are enough to set the baseline for what’s possible given the political structure of a country.

[fragmede]

If, when claiming two things are sufficient, you have to introduce a third thing (political structure) to qualify them, you're clearly oversimplifying it too much, leading to an erroneous conclusion.

[dhfbshfbu4u3]

Of course it’s a simplification, but so is E = mc². A good model strips things down to the variables that matter most for the point you’re making. GDP and population, viewed through the lens of political structure, give you a workable baseline without drowning in secondary factors.