People think that the world of politics is complicated, because there are competing interests. After all, there are video bloggers who specialize in political analysis. So when someone proposes to analyze things by principles, he is dismissed as too "simplistic." And, when he proposes laissez-faire as the ideal system, he is told that people are irrational and must not be trusted to do the right thing.
But let's put things in perspective: a single human has more than a billion moving parts. Yes, humans have free will, but elements of a cell don't. Yet, in both cases there are rules that encompass and organize the complexity; in a cell, the rules are mechanical and chemical laws. In human affairs, they are a philosophy (mostly ethics). Every person is guided by a philosophy, which he either holds explicitly or implicitly. Even pragmatists, who reject principles, are guided by rejecting long-term planning on principle.
Let's take a page from nature, and organize society by a simple rule. This rule has to be: protection of individual rights. If the four basic forces of nature (gravity, electricity, the two nuclear forces) can organize a billion moving parts in a single human cell, why can't we organize the world of 8 billion people?
It's time to stop the waste of creative energy. Let's setup the ideal society, and move on to channel our precious time into invention and creativity. Laissez-faire capitalism is all that's needed, it's not overly simplified.