The founder of Facebook Mark Zuckerberg wrote on its page that he didn’t exclude the integration of cryptocurrency Facebook. He calls the most interesting in the problem of today’s technologies the opposition of centralization and decentralization. In the nineties, Zuckerberg writes, people believed in the power of decentralization through technology. Today, many people have lost this faith with the emergence of large technology companies and governments that use technology to monitor their citizens. Versus, Zuckerberg calls cryptography and cryptocurrencies, which transfer power from centralized systems to personal hands. I’m interested, the founder of Facebook writes, to go deep and study the positive and negative aspects of these technologies and how best to use them in our services.