Before infinite feeds, there was Channel 99: a scrolling list of what was on, and you sat there waiting for your channel to come back around like it was a small punishment. Turns out the system behind it was more interesting than the scroll. Local headends, satellite data, and a Commodore Amiga rendering your entire lineup as live video around the clock, complete with the occasional guru meditation crash.

I trace how an electronic program guide became a full-time channel, the shift from Preview to the TV Guide Channel in 1999, and how smarter set-top boxes eventually killed the linear scroll by letting you search and filter instead of waiting.

The bigger point: television has been software for a long time, running on real-time rendering and uptime engineering that never got credit. And the psychology of that scroll, the looped promise ...