The Inner Workings of Telephony

I think everybody finds it annoying when people talk loudly on their phones in public places. And yet, people still do it - possibly without realising it. Why is this? Is there a perfectly scientific explanation for why we shout on our cell phones? No, miles. This is going to get rather tiring, isn't it? So I feel that to get to the bottom of this, that we have to delve into the inner workings of telephony. Well, let's go back to the very beginning. Who, my dear Rutherford, invented the telephone? I know, Alexander Graham Bell. He was actually not quite that straightforward. The whole idea would have seemed anathema to older