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For those of you interested in such things, there’s an interesting thread running over on the Safety Critical Mail List at Bielefeld on software failure. Sparked off by Peter Ladkin’s post over on Abnormal Distribution on the same subject. Whether software can be said to fail and whether you can use the term reliability to describe it is one of those strange attractors about which the list tends to orbit. An interesting discussion, although at times I did think we were playing a variant of Wittgenstein’s definition game.

And my opinion? Glad you asked.

Yes of course software fails. That it’s failure is not the same as the pseudo-random failure that we posit to hardware components is neither here nor there. Continue Reading…