A Brief History of Signals

Prior to the advent of practical electrical communication, human beings had been signaling over a distance in all kinds of ways. The bell in the church tower called people to religious services or “for whom the bell tolls”—the announcement of a death. We knew a priori several things about church bells. We knew approximately when services were to begin, and we knew that a long, slow tolling of the bells announced death. Thus we could distinguish one from the other, namely a call to relig...

 A Brief History of People Resisting Technological Advance...

Look at how often change is fought in history. Here’s an example that always tickles me. The chain of events back in the twelfth century that set Europe going economically after the Dark Ages was essentially the textile revolution. A new loom came in from Arab Spain. It had foot pedals, which left the weaver’s hands free to weave faster and make more cloth cheaper. The Dutch weavers smashed the thing up because it would have put people out of work. (That was a new idea in the twelfth cent...