[nobleach]

Perhaps I'm misreading the person to whom you're replying, but usefullness, while subjective, isn't typically based on one person's opinion. If enough people agree on the usefullness of something, we as a collective call it "useful".

Perhaps we take the example of a blender. There's enough need to blend/puree/chop food-like-items, that a large group of people agree on the usefullness of a blender. A salad-shooter, while a novel idea, might not be seen as "useful".

Creating software that most folks wouldn't find useful still might be considered "neat" or "cool". But it may not be adding anything to the industry. The fact that someone shipped something quickly doesn't make it any better.

[PUSH_AX]

Ultimately, or at least in this discussion, we should decouple the software’s end use from the question of whether it satisfies the creator’s requirements and vision in a safe and robust way. How you get there and what happens after are two different problems.