The answer would surprise you. My Grandma used to love sharing her recipes at church with the others who decided not to buy her food at the bake sale. The recipe she shared never seemed to give the same flavor as the gourmet delights she used to sell on Sundays. The flavor of those recipes comes from the experience she had while she was cooking. Other than a simple recipe a cooking process is more than putting together pieces like a math equation. For this reason she knew that her recipes were always safe because the person doing the cooking didn't have have the same experience as she did during those critical moments of the preparation or cooking process. As with cooking there are other professions which can't be described in such a way that allows someone to get the same results as someone who carries with them the same experience.