Mark Zuckerberg celebrated his 40th birthday by reminiscing on his youth, as one is wont to do. The creator of Facebook hosted a party that was accessorized with various rooms, decorated as some of the places where he’s lived in at different points in his life. One of his guests, Bill Gates, posed in one of the rooms with Zuckerberg, showing the two at a Harvard college dorm, where they both attended college.
