If a symphonic performer can't run through some scales, or a doctor cant suture a laceration, I would say that is indicative of a major problem. If you owned a

If a symphonic performer can't run through some scales, or a doctor cant suture a laceration, I would say that is indicative of a major problem. If you owned a restaurant, would you hire a hostess that couldn't operate a telephone, or a cook that couldn't turn on a stove? Similarly I wouldn't hire a programmer that could not turn an array into a linked list.