Re: Airbus definition of 'fail safe'....
No.
A timer overflow is so obvious and predictable that you can even work out exactly when it will occur to the individual tick.
A mistake in a flight control algorithm that gives unwanted results when fed by a particular mix of wrong and right values is an incredibly hard thing to predict.
One is a failure to count.
The other is an inability to allow for and test all possible circumstances.
Biting the hand that feeds IT
