Sorry to pile on (to https://news.ycombinator.com/item?id=44676030), but can you please make your substantive points without putting others down, or their work? It's always possible to do so, and much more in keeping with the spirit we want here: https://news.ycombinator.com/newsguidelines.html.

It's great if you know more than others and have time to share some of what you know in the comments. But the putdown aspect is unnecessary and can really hit people hard sometimes.