All this confuses me, too, because what is "value-added" and what is "productive" is completely non-intuitive to me. Like, if you grow wheat and harvest it, you're productive. That I get. If you grind the wheat into flour, does that count? If you bake it into bread? What if you sell the bread? At what point does this stop being "productive"? Because I could make the argument that nobody after the farmer is actually doing anything but adding value, but that doesn't seem to be what they mean. Because I don't think they know what they mean, is the long and short of it.