Discussed here a few times<p><a href="https://news.ycombinator.com/item?id=34832045" rel="nofollow">https://news.ycombinator.com/item?id=34832045</a><p><a href="https://news.ycombinator.com/item?id=34839954" rel="nofollow">https://news.ycombinator.com/item?id=34839954</a>