Argh! Me so angry! I so angry I wants to stabs everybody!! Aaaarrrrrggggh. Ok. Korea, let's talk. I understand that you would love to usurp Vietnam for the most underground tunnels by building subways. New subway lines are good. They make the roads less congested and it's better for the environment. Let me reiterate new subway lines are good thing. But, that is not the problem, the problem is that when you build a new line that is connected to an existing station, there is no reason to renumber all the exits. When you do this you cause thousands of people to get confused and you cause everyone to get frustrated and they want to starts stabbing! Now stabbing is not good and many kids carry box cutters for school so they would kill most of the adults and then Gangnam would be in the hands of stressed out kids that study too much in order to make their tiger mommies happy. (deep breath) What I propose is that in the future you should keep the existing numbering of th...