Two of the three common reasons systems fail are the following: 1) they have faulty or poorly matched parts; 2) they are used in ways that exceed the intended design. what is the third common reason systems fail?
a. entropy will always insure a more disordered state.
b. they were poorly designed at the beginning.
c. if something can go wrong, it will go wrong.
d. they will always fall victim to the inevitable limit of human knowledge.