Clinical medicine is a better analogy than technical rollouts. But you're right, modern development economics argues that social fixes (policies) should be empirically driven using evidence-based randomized control trials.
Esther Duflo has pushing this approach at the MIT Poverty Action Lab. The main insight is to reject grand generalizations and broad theorizing. Sitting in an armchair pondering how to "fix capitalism" is unlikely to lead to useful lines of thought. Society is too complex a system, cause & effect relationships can be highly localized and context-dependent; formulaic thinking just leads one down ideological rabbit holes.
Well, in an old school way thats already whats happening. We have many countries on this planet (UN recognizes about 200) and some of the most modern are actually a collection of smaller states organized in a federation. USA, Germany, Switzerland etc.
In fact, you guys had the unfortunate role to find out how well USSR style (I assume) communism works.
Actually, we should start treating social fixes like we do technical rollouts. Prove it on a small scale somewhere first, and then carefully expand.
This seems like common sense. Yet for some reason changes in policies tend to be sweeping, national or even international.