Here is an interesting and thought-provoking article on big data and social credit systems as we see manifesting in China. China says a social scoring system is useful in managing is large population but globally this has triggered concerns and questions around the ethics of big data.
Currently in pilot mode, the new system will be rolled out in 2020, and go through numerous iterations before becoming official. Already, in 2018, people with a low score were prohibited from buying plane tickets almost 18 million times, while high-speed train ticket transactions were blocked 5.5 million times. A further 128 people were prohibited from leaving China, due to unpaid taxes. This sure gives rise to many questions, concerns and debates and arguments. See the infographic here https://www.visualcapitalist.com/the-game-of-life-visualizing-chinas-social-credit-system/