Programming it to recognize those with blonde or no hair would have required more processing time, more than the rate of 60,000 spectators per day would.
因此當電腦沒有收到有關黑髮的數據時，就認為那不是一個人。而小孩子因為被抱在懷中，與大人影像重疊，也常「不算數」。系統中的電腦一秒鐘可處理卅個畫面。