A county blood-donation van must estimate Saturday’s likely shortfall of O-negative units from labeled weekend history so the hospital can restock. A vendor says their chat writer can guess that number in conversation and the office can skip a forecast. What should the leader require?

A Saturday unit shortfall is a number the office must estimate from labeled weekend history, which is a predictive job. A chat writer produces language, not a calibrated forecast, and a conversational guess is not a substitute for that model. Leaders should refuse generative substitution when the real need is a forecast. The writer can still draft a donor note after the number is estimated.