An empty-room test misses busy-room airtime demand

A fictional conference-room wireless service works well during an empty-room test but slows when many users attend a session. Supplied observations show high channel utilization and retries during the crowded period, while authentication and address assignment complete. A colleague proposes increasing every AP to maximum transmit power. Another asks for actual channel reuse, interference, client capabilities, uplink, power and demand evidence before a targeted capacity change. The exercise performs no scan, capture or radio modification. It asks the learner to distinguish adequate signal coverage from shared airtime capacity and to explain why one successful light-load test does not validate the intended busy-room user experience or justify a universal tuning action.