My father was sent for 'unnecessary' tests after a Doctor had a feeling that something 'wasn't quite right' with him, despite the first round of tests revealing nothing. He just believed that my father's unexplained fatigue was something serious. He was right. My dad had a 99% blockage in an artery that, if left un-bypassed, would have resulted in his being dead before he hit the floor from a heart attack. I still have my dad because of someone's instinct and willingness to do what he thought best, protocols bedamned. I'll defend that sort of choice all day long.