They did suggest that, but I didn't see anything measurable in terms of "usefulness". Not to mention that's a context dependent criteria. So I don't really know

They did suggest that, but I didn't see anything measurable in terms of "usefulness". Not to mention that's a context dependent criteria. So I don't really know how you would measure it to begin with. That's why I am saying it is ripe for bias being introduced. Perhaps these findings are completely legitimate, but I'm skeptical.