Post #730823

A wired telephone is also a technical marvel in a way. It's easy to forget but in many cases there is a physical line between you and the person on the other side. So if you call someone around the world you could potentially follow the electrical signal through cables, through the ground, through the sea and get to the person on the other side. It's easy to get lost in the abstraction but this physical connection is an absolute marvel that is a joy to visualize for me.