Previous submission & discussion: http://news.ycombinator.com/item?id=4172837 http://news.ycombinator.com/item?id=4172837 (How comes it's the same URL and it

Previous submission & discussion: http://news.ycombinator.com/item?id=4172837 http://news.ycombinator.com/item?id=4172837 (How comes it's the same URL and it didn't get detected as a duplicate?)