This may be debatable and we'll never know how history will remember our time but if you're Zuck, like Jobs/Gates/Musk, you have a potential to be a memorable person in history. Like laymen know the names of a few famous scientists, explorers, artists and politicians from centuries ago (Ceasar, Columbus, Newton). Millions of people have come and gone in the centuries since but only a handful of names are commonly remembered. In a sense, he has a legacy to protect.