Having done board op duty at age 15 to installing major systems in Seattle at age 25, to running five stations with a five-person air staff today, I can say with certainty that well over 90% of missed cues over the years has been human error. While I lament the loss of live local talent on music-based radio programs, the most logical cost savings in a radio station is with board ops. In my day in the 70s, we called them babysitters... they threaded tape on the Scully, inserted a new cart in the carousel, loaded the next day's log from punch tape, and they made mistakes. Wrong reel, wrong cart, wrong day's log, letting the reel run out, etc. And they fell asleep sometimes.
One of the easiest things to automate is a sports event. And that is the most likely event to be screwed up by a bored board op talking to his/her girl/boy friend, reading a book, looking at porn, etc. As stated much earlier, we did an entire football and basketball season without human presence, with no errors. Can the board op match that?