Complexity of society wrt human brain is significant

But this social system we live in is very complex.. So is the actual ways to achieve goals here. So many factore that it's stupid to say (atleast for common men like us) like do this this and that will be done. Otherwise everyone will succeed. Here lies the catch. Any real working, practicle solution to a social problem may seem stupidity due to it's complexity induced indirectness and so many dimensions/factors involvement.