A Russian fled to Siberia, or they had no contact with anyone for decades. The father’s brother was executed in front of him due to Stalins religious persecution. So they were motivated to stay hidden.

They could see satellites, overtime, and figured what those were. Understanding that rocket tech had continue to advance. Plastic wrap, however blew their minds.

https://amp.theguardian.com/world/2015/nov/12/russia-recluse...