I first attended CGDC in 1994. It was two years after his Dragon Speech (which I knew nothing about), but the highlight of the conference was his talk about the challenges of story-based games. The part I remember is how he modeled stories as branching trees with fan-out, foldback, tree-of-death, etc (he covers this in the "Architecture" chapter of this book "The Art of Interactive Design"). I didn't really follow Crawford's work on Erasmatron or later, but by the late 90's it sounded like his story model had changed from a tree to a graph network structure, like a finite state machine. While it was an improvement, I was a bit skeptical that this model was enough. Nevertheless, I spent a lot of time thinking about the problem. You see, he'd already infected me with his dream of interactive storytelling.
By the time I moved to California and took a job at EA/Maxis on The Sims 2.0 team, I had decided that true interactive storytelling (as I saw it) was not possible until game AI was sophisticated enough to enable autonomous NPC chatbots. So I put that dream aside while I pursued a career in software development.
Here we are, over a quarter of a century later, and that AI technology is here now. For those of us who have been waiting for this moment, it is almost miraculous. It might be the end of an era for Chris Crawford, but it is just the beginning of the AI-based interactive storytelling era.