If I could change one event in history, I would choose to prevent the burning of the Library of Alexandria. This ancient library contained a vast amount of knowledge from various civilizations, and its destruction resulted in the loss of countless texts, scientific discoveries, and cultural heritage. Preserving this repository of knowledge could have significantly accelerated human progress in various fields, from science and medicine to philosophy and the arts. It's a pivotal moment in history where preserving knowledge could have had a profound impact on our development as a society.