When Ted Turner launched CNN on June 1, 1980, the assumption he broke was the one nobody had thought to question: that a story ends.
News before Turner was a closed transaction. A half-hour broadcast. A morning paper. A finite product you finished and set down. Turner replaced that with the stream — the developing story, the chyron crawl, the always-on feed. He invented the open loop, and that format has since eaten every consumer business that touches information.
