This is a well-written and articulated article. It is as much a teaser ad as picking 3 chapters out of 15 of a consistently good book and making them available

This is a well-written and articulated article. It is as much a teaser ad as picking 3 chapters out of 15 of a consistently good book and making them available for free. I mean that, even if making them available for free is part of the promotional plan, writing them was genuinely done for the content. Edit: Another way to look at it: Don't you get value out of it by reading it even if you don't attend the conference ?