This was 1982, the year that Gary Thomasson was batting cleanup for the Yomiuri Giants. Thomasson had the unfortunate nickname of "The Electric Fan", which, if you think about it, was exactly what he was. Night after night, he stood in the batter's box, whiffing mightily at the ball, down on three strikes every time. He had a fully-formed body and yet served no purpose to the world. And the Giants were still paying a mint to keep him there. It was a beautiful thing. I'm not being ironic here either. Seriously, I can't think of any way to describe Gary Thomasson but as "living hyperart".
Run a single loop measuring 4.16667 miles within a single hour. Now do it again. And again. Now keep doing it – starting a new loop on the hour, regardless of how fast you finish the previous one – until there’s only one runner willing or capable of doing so. Welcome to the simple – some might say sadistic – concept of the Big Dog Backyard Ultra in Bedford County, Tennessee.
Many systems are organized hierarchically. The CERNDOC documentation system is an example, as is the Unix file system, and the VMS/HELP system. A tree has the practical advantage of giving every node a unique name. However, it does not allow the system to model the real world. For example, in a hierarchical HELP system such as VMS/HELP, one often gets to a lead on a tree such as:
HELP COMPILER SOURCE_FORMAT PRAGMAS DEFAULTS
only to find a reference to another leaf: Please see
HELP COMPILER COMMAND OPTIONS DEFAULTS PRAGMAS
and it is necessary to leave the system and re-enter it. What was needed was a link from one node to another, because in this case the information was not naturally organized into a tree.