The submission I made earlier - http://news.ycombinator.com/item?id=2346092 http://news.ycombinator.com/item?id=2346092 - apparently has notes that are mostl

The submission I made earlier - http://news.ycombinator.com/item?id=2346092 http://news.ycombinator.com/item?id=2346092 - apparently has notes that are mostly ripped without giving proper credit. As a result, I thought I'd submit a link to the originals, rather than that rip-off.