Risk

(Conversation between a couple.)

"My dear, Mary is not putting up weight. We need to make her eat more. Maybe  we should try adding some fish to her porridge?" The wife asks. Amy is their two-year-old daughter.

"Fish? What an idea!" The husband gasps, "Eating fish is a high risk procedure! What if Mary gets a fish bone stuck in her throat?"

Yes, you guess that much. The husband is a senior administrator of the Hospital Authority.

"Oh, maybe I shall check each and every piece that she eats and make sure there's no bone in it..." The wife hesitates to suggest.

"No, that's not fool-proof. We need a better way. Em... Since eating fish is new to Mary and it has a certain risk, we need to set up a system of credential to document who in this family is qualified to eat fish."

"Oh...!" The wife cannot believe her ears, "What are the requirements to be qualified?"

"Simple. One must provide evidence that he or she is capable of performing the procedure by providing a relevant track record."