In the movie Tron Legacy, Flynn builds a new computer world, and creates an AI copy of himself called CLU, with whom he plans to "create a perfect system".
CLU then goes and sets up a totalitarian police-state in which everyone is either conscripted into the military or killed off in combat games. Which was not at all what Flynn had wanted.
But the problem is that computers don't do what you want, they do what you tell them to.
What does "create a perfect system" mean, when applied to human politics? It means something like: "have a plan in your head for how society should be, and then try to make the external world be exactly like your plan."