Cultural tracking
In ufology, cultural tracking is the tendency of UFO reports through time to change their content in line with cultural changes. == Examples == Unidentified flying objects have long been reported through history, but the claimed craft are always a perversion of the technology or fiction of the day, and "the UFO technology tracks what our culture has but rarely exceeds it by a great deal." When aviation was limited to hot-air balloons, UFO reports consisted of claims of mysterious airships.