“A friend of mine named Joe was staying somewhere else in the hotel and I didn’t know his room number. But I did know which room his acquaintance, Frank, was staying in. So I went up there and knocked on his door and asked him, ‘Where’s Joe staying?’ Frank didn’t know, but he did know which room Joe’s co-worker, Theodore, was staying in, and gave me that room number instead. So I went to Theodore’s room and asked him where Joe was staying, and Theodore told me that Joe was in Room 414. And that, in fact, is where Joe was.”

Excellent analogy about what use pointers have.