Everyday practices and choices are resilient, stable and provide sufficient data on society and how the administrative apparatus works. Most importantly, studying everyday life helps to deal with the problem of political censorship.
These everyday practices and preferences can be gleaned by studying social media, still accessible in most semi-closed countries for both citizens and researchers. It contains information about daily experiences, regular activities, relationships, etc. Social media is often monitored by governments, and citizens can get punished for posting there, but the topics, including their emotional coloring and dynamics over time, tell us a lot about the society being studied.
Note that simply reading social networks gives us little or nothing. By burying herself in selected channels or pages, the researcher creates an information bubble for herself, and social media algorithms reinforce the bubble. As a result, the analysis becomes one-sided. Meanwhile, machine methods for analyzing social networks, being representative and independent, make it possible to understand how life works in a particular country and how citizens might behave in the event of certain changes.
Other tools are more efficient than social media. Some open data remains available in semi-closed societies as an important tool for the top leadership to control lower-level institutions. If information flows vertically, then at each rung higher it can be distorted. For instance, if every court has to post all its decisions publicly, then judicial statistics are more difficult to distort.