Plenty of people know how to do failure mode analysis. In most webcentric scenarios, though, nobody cares because it's all about the average case. If 99 of your

Plenty of people know how to do failure mode analysis. In most webcentric scenarios, though, nobody cares because it's all about the average case. If 99 of your users have a great experience and 1 has a bad-but-not-bad-enough-to-make-the-front-page experience, that's a huge win over 100 users having an okay experience. I hate it too, but that's the market.