Multiple outlets discuss how popes address major shifts in technology by drawing on a long-standing Catholic social teaching principle known as subsidiarity. The articles describe Pope Leo as one example among several popes who frame modern technological upheavals—ranging from earlier industrial-era developments to contemporary advances such as artificial intelligence—through the same underlying idea. Subsidiarity, as presented in the sources, emphasizes that decisions should be made at the most local or immediate level capable of handling them, rather than being absorbed by larger institutions when that is unnecessary. The coverage links this approach to Catholic social teaching and notes that the principle has guided how the Church evaluates the social impacts of technological change for decades. One source highlights that an encyclical invokes subsidiarity as a core concept, portraying it as a continuity point between responses to new technologies and the Church’s broader moral and social framework. Overall, the reports characterize subsidiarity as a guiding lens popes use to assess how technology affects communities and governance, while keeping authority and responsibility appropriately distributed.