In this case "unusable" is fully justified, it means that the entire (and, I suppose, important) class of use cases had been eliminated: it does not work offline. And the system is designed in such a way that there is no hope it'll ever be fixed.
I doubt they did any proper UX testing at all, they did not collect user stories, they did not consider all the use cases. They just hired a bunch of hipsters eager to add as many buzzwords as possible to their CVs.
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In this case "unusable" is fully justified, it means that the entire (and, I suppose, important) class of use cases had been eliminated: it does not work offline. And the system is designed in such a way that there is no hope it'll ever be fixed.
I doubt they did any proper UX testing at all, they did not collect user stories, they did not consider all the use cases. They just hired a bunch of hipsters eager to add as many buzzwords as possible to their CVs.
Really? The BBC didn't bother doing any UX testing on a redesign of their flagship website? Really?
This reads like you're just point-scoring at this point.
If the site worked on the Tube before, and now it doesn't, that's a pretty massive failing.
That point was added after I made the comment.