Okay, I put my keynote address to the Assistive Technology Cluster Conference online.
Please keep in mind that it was delivered to a gathering of special education teachers, speech pathologists, occupational and physical therapists, school administrators and some parents of kids using assistive technology. It was also written with the (probably safe) assumption that most of them had never read the book or this blog, so there's material that may obviously seem familiar to you.
Oh, and also, I had a time slot of over an hour, so if it seems long to you as a reader, imagine how I felt. That's a lot of jabbering for one old man.