That might be better than what I do. I disagree, perhaps not often, but there are bits of functionality that I think just aren't justifiable/cost-effective. So I try and dissuade them. Although sometimes I might be a bit too vocal. That said, I do try and say that, at the end of the day they can definitely just say "shush... Just build it" and I will. But I'm honestly trying to help them build the best product we can, as effectively as possible.