hacker news links - sep 13 2015

https://news.ycombinator.com/item?id=10208075

https://news.ycombinator.com/item?id=10209775

https://news.ycombinator.com/item?id=10208861


https://news.ycombinator.com/item?id=10210321

https://news.ycombinator.com/item?id=10209456

https://news.ycombinator.com/item?id=10211693

https://news.ycombinator.com/item?id=10210171

https://news.ycombinator.com/item?id=10210776

https://blogs.uw.edu/ajko/2012/08/22/john-carmack-discusses-the-art-and-science-of-software-engineering/