The first computer virus, Creeper, displayed the message: "I'M THE CREEPER. CATCH ME IF YOU CAN!".Creeper was designed to be a self-replicating program, and while it didn't have malicious intent, it would display this message on infected computers. It was created in 1971 by Bob Thomas at BBN. 

At the end of a Jewish wedding ceremony, a glass is traditionally broken. This act is a symbolic reminder of the destruction of the Temple in Jerusalem, and also represents the fragility of marriage. The breaking of the glass is typically done by the groom, though it's becoming more common for both partners to participate. The tradition is met with shouts of "Mazel Tov," signifying congratulations and good fortune. 

Before the advent of electric lights, Christmas trees were illuminated by candles. This practice, popular since the 1800s, was a significant fire hazard, leading to many home fires. It took decades for electric lights to become a common alternative, with the first electric tree display appearing in 1882. 

Written when Ernest Hemingway was thirty years old and lauded as the best American novel to emerge from World War I, A Farewell to Arms is the unforgettable story of an American ambulance driver on the Italian front and his passion for a beautiful English nurse.