In short, because the other submission has a link to the scribd site, and the direct links were buried. But submitting this separately I gave people a chance t

In short, because the other submission has a link to the scribd site, and the direct links were buried. But submitting this separately I gave people a chance to decide whether they want to access the direct version(s), or the scribd one. Ideally a site that eventually replaces HN, or an update to HN, will have a single location where similar submissions can congregate, and then we get a single discussion thread. In this case we could then have put the direct links as alternative sources, and retained a single discussion location. But we don't have that, so I provided an alternative source that was close to the surface, instead of buried in a thread.