Murphy's law for autonomous path planning

So let say you design a path planning algorithm for your autonomous robot and think that it should work ok because you have this super camera, laser ranging and think of the environment a little bit like Mars. You have seen examples of races, and feel comfortable your vehicle can recover from a bump. Then you enter the DARPA grand challenge, your vehicle goes fast but then you get a bird in your field of view, how is your algorithm taking care of THAT.