Here the technologies of speed reach the ultimate. That was great. Then more and more applications came in with greater refinements. It is like anywhere in life. When you have a capability, people find a use for that.
Television transmitters have atomic clocks.
If you have two transmitters on the same channel, and you are between two cities, the picture will go up and down unless they are on exactly the same frequency. All good television stations have a rubidium clock. We have reached the epoch of the nanosecond. This is the heyday of speed. That is our condition, a culmination of millennia of evolution in human societies, technologies, and habits of mind.