Discussed long ago at <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=1321899" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=1321899</a> and not so long ago at <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10077471" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10077471</a>.