With any system , there ' s always some degree of a miss or a false alarm terms that came from the Cold War days actually . You can probs guess why . There does exist a minimum iirc the MAP rule e . g . a miss probability of . 2 and FA probability of . 2 , and you can modify a design based on priorities to have a greater sensitivity to a Miss or False Alarm , e . g . . 1 and . 3 , but can never have both be zero . If I were a soviet engineer , I would design a system skewed towards finding Misses , which means I ' d have to sacrifice some integretity in False Alarms and trust my commanders . Scary stuff . <| sep |> what ' s really going onButt hurt liberals . <| sep |> There was a post about a girl living with a guy and the boyfriend became pretty aggressive about asking the girlfriend d to wear a bra around her male roommate . Safe to say what ' s with insecure individuals thinking they have a say