When you have no brain, you gotta have legs
Imagine you are working on a project and that there is a strike in public transportation today. Now, imagine you are the only one at the office to have the keys to unlock the room where our firewall is and that you left your keys at home. One would think that chances that the company firewall would crash just today are small. Just f... WRONG!
I must admit that I hesitated quite a lot between a looong and painful back and forth and just knocking down the door. :-)