War is to man what maternity is to a woman. From a philosophical and doctrinal viewpoint I do not believe in perpetual peace.
For years my wedding ring has done its job. It has led me not into temptation. It has reminded my husband numerous times at parties that it's time to go home. It has been a source of relief to a dinner companion. It has been a status symbol in the maternity ward.
Bureaucracy gives birth to itself and then expects maternity benefits.
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).