For the question “Why should governments or religions fear air pumps and electrical machines?”, it isn’t about literal air pumps and electrical machines – it’s about development and change. Governments fear change as new developments question their authority. Those with power have a hard time giving it up (as we see in our current government). Johnson tells us an example with the quote “The fact that the coal measures were centered in northern England shifted the nation’s economic balance of power away from the prosperous rural estates of Sussex, Essex, and Kent.” Social media holds social/political consequences today, with inaccurate information being easily spread and believed by the people (propaganda, fact checking, etc.).