Originally Posted by
Lonewolf_50
The "hey, this one's beginning to wear/lose material" trigger gets the box off the aircraft before these critical parts fail.
Excepts when it doesn't.
Humans ofter overestimate their own level of control over things, personally I prefer robust design over overconfidence in monitoring systems as a general principle. That doesn't mean that I think monitoring systems shouldn't exist, it's just not wise to think one has all eventualities covered - because one never has.