Einstein's ignorant celebrity story

At that time, Einstein was persecuted by the Nazis and forced to immigrate to the United States. When he arrived in America by plane, the airport was crowded with welcoming people. Of course, reporters are indispensable for such a scene. A reporter had nothing to say and asked him a physical number, but no one expected it. Einstein answered bluntly, "I don't know." Incredibly, this is just a common sense question, and even many laymen present know the answer. It can be said that the greatest scientist of the twentieth century will never be stumped. Is it because he thinks the question is too simple, wants to put on airs and disdains to answer it? Soon after, when someone asked about it, Einstein said sincerely, "I really don't remember that number." Seeing each other's incredible, Einstein explained, "I don't need to waste my precious energy." I never remember the numbers that can be found by looking them up in an encyclopedia. "