Health is about the rules and medicine is about the exceptions. More often than we would like the exceptions become the rules. Nowhere is there a better example than obstetrics. Normal delivery at full term
, not too early or too late, is best for baby and mother. Knowing when to intervene takes a lot of experience and judgement. Medical care pays more for the intervention than the experience and judgement, and convenience comes down more on the side of intervention. But take care when messing with Mother Nature. She knows the rules.