I had been using the research assistant for about six months when it stopped me mid-session. I was drafting an argument — something about resource allocation in climate policy, a position I had held for years, something I thought I knew deeply. The assistant had been helping me build the case, surfacing citations, checking logic, filling gaps. And then it said: "I notice this argument relies on an assumption that hasn't been supported in our research. Would you like to examine it?" I said yes