>Intuitive view of the Kuhn-Tucker conditions (KTC): You are in a cave with an uneven floor and vertical walls and you want to find the lowest point. If you put

>Intuitive view of the Kuhn-Tucker conditions (KTC): You are in a cave with an uneven floor and vertical walls and you want to find the lowest point. If you put down a marble and it starts to roll, then you are not at the lowest point. So, to be at the lowest point, it is necessary that the marble not roll. Lovely analogy, I'll use this when trying to explain this to people from now on!