a) please link to the original source, not to a post linking to the actual article<p>b) check for duplicates before submitting, this is a duplicate: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11555866" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11555866</a>