What is the perfect government, and how could we get there? Is it possible for fallible creatures to form an infallible social system?
No, it's not at all remotely possible that fallible creatures will ever create an infallible social system, but you need to take that up with the Progressives as they're the only ones who might argue otherwise.
The "perfect" government is one that can effectively act to realize the true will of the governed.
Much worse governments are those that act to realize the will of those who govern, and the absolutely worse governments are those that act to realize the will of those who govern, but are able to convince the governed that it is all in their best interest.
Imagine yourself as a member of a totally isolated group of people who have grown in numbers to the point that some sort of governing agency seems to be required if all are, in some acceptable measure, to benefit from your society.
You all get together and agree upon one or more people to take on the task of governance. How would you expect them to govern? Would you accept one or more of them deciding that they knew better than you, and if they didn't have an army of armed soldiers to enforce their will, would you say to yourself "Well, they're pretty dammed smart so they must know a lot more than I do about what is good for me and my family?"
This isn't an issue of scale. The same parameters for governance at a very local level can be demanded of government at a national level. Those who would have it otherwise will tell you this isn't so, but it is.
It comes down to how much you trust people to do the right thing. If you have little trust then you need governance by the enlightened, and how they manage to herd the great unwashed into accepting enlightened results is A-OK.
The American Founders (vastly "smarter" than our current president) recognized that the more local the governance the better.
How perverse it is then that today the best we can expect from the knowledge of the governed as regards the governors is a laughably superficial understanding of who the president is and what the presidency is all about.
The American Empire is well into decline, and as it was with the Romans, the fault lies within.