The slides from this talk were posted earlier this year but the video became available just now. Here are the HN discussions on the topic:<p><a href="http://news.ycombinator.com/item?id=4305486" rel="nofollow">http://news.ycombinator.com/item?id=4305486</a><p><a href="http://news.ycombinator.com/item?id=3837147" rel="nofollow">http://news.ycombinator.com/item?id=3837147</a>