For four years, I listened to stories of intelligence failures, and it wasnt due to incompetence of anyone in the system, but that the system is so arcane. – Charles F. Bass
For 13 to be unlucky would require there to be some kind of cosmic intelligence that counts things that humans count and that also makes certain things happen on certain dates or in certain places according to whether the number 13 is involved or not (whatever is involved might mean). – Douglas Hofstadter