bearophile Wrote:

> This is a paper that shows why DbC can not enough in some situations, by Ken 
> Garlington, 1998:
> http://home.flash.net/~kennieg/ariane.html
> 
> In the situation like the one of the Ariane I think the good solution is the 
> introduce a fuzzy control system that has a degradation of its effectiveness 
> as conditions come out of its specs, but avoids a total failure. This is what 
> biological designs too do. It's a kind of 'defensive programming'.
> 
>From what I heard, the software for Ariane was physically unable to handle 
>Ariane, so no matter what assertions you put into it, it would crash.

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