What do you call the most powerful person in the world? How do you relate to someone who is so important, even the furniture in his house has a name and a history? There’s an iconic image you may remember: John Kennedy, Jr., playing under the Resolute desk in the Oval Office as his father, the most powerful man in the world, looks on. JFK is smiling. John Jr. didn’t call JFK, “Mr. President.” He called him “Dad.” So how do you relate to an extremely important person? It all depends on your relationship.