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I think the important part of this is that all three circles in their Venn diagram must intersect. If they don't, you'll fail. Either because the production qua

by chiph 9y ago

I think the important part of this is that all three circles in their Venn diagram must intersect. If they don't, you'll fail. Either because the production quality is non-existent, no business value is being added, or the product doesn't have the right attributes to be saleable. How big does this sweet spot intersection need to be? "As large as possible" doesn't sound right - because it says you've spent too much time polishing and not enough time getting it in front of customers. Too small and your value isn't obvious enough, inviting the competition to steal your lunch. So .. perhaps it should be "just right", whatever that means for your market.

mannykannot 9y ago
The author says these are Venn diagrams, but he omits saying what the domain is. Are the members of these sets programs? If so, then he is saying that a program may have any combination (including possibly none) of these three concepts of quality, but a given program (or whatever the elements are) either possesses a given quality, or it does not - the model, as presented, does not allow for degrees of quality. In this interpretation, as large as possible a sweet spot would simply mean that you have many programs having all three qualities, and if that is not optimal, then the model is not complete. To be clear, I don't think this is what the author meant; I suspect either I have guessed wrongly about the set's domains, or he has just chosen a flawed way of expressing himself.