Inside Mark Zuckerberg’s Lost Notebook

In the early days of Facebook, Zuck kept his plans for world domination in handwritten journals. He destroyed them. But a few revealing pages survived. In a journal with unlined 8-by-10 paper, he sketched his mission and product design and explored how a tiny company might become a vital utility for the world. In detail, he described features called Open Registration and Feed, two products that would supercharge his company.