Better video via the link I submitted a year ago: http://news.ycombinator.com/item?id=468063 http://news.ycombinator.com/item?id=468063 This item has also show

Better video via the link I submitted a year ago: http://news.ycombinator.com/item?id=468063 http://news.ycombinator.com/item?id=468063 This item has also shown up several times before: http://searchyc.com/shoelace http://searchyc.com/shoelace It's one of the methods I use to assess how to present things: http://news.ycombinator.com/item?id=1059659 http://news.ycombinator.com/item?id=1059659 It lets me know if someone will like puzzles for their own sake, or if "everything has to have a use."