I value self-discipline, but creating systems that make it next to impossible to misbehave is more reliable than self-control.
Why do the President and Vice-President constantly change the subject when asked to explain why things are going so badly in Iraq? The answer is simple. They have been consistently wrong about Iraq, and the results speak for themselves.
The design of a dress, furniture, a house, a room, a street and a city are all the same process.