Context, please? just a little? Figuring the top comment on HN might be relevant, I checked the comments (learned to do that before following main link), then s

Context, please? just a little? Figuring the top comment on HN might be relevant, I checked the comments (learned to do that before following main link), then started the presentation, it did nothing, came back, found a comment mentioning the near-hidden navigation, went back, read a dozen pages and still don't know what he's talking about.