Arun Mehta wrote an essay called "When a Button Is All That Connects You to the World" for the book Beautiful Code (2007) about speech software designed for Ste

Arun Mehta wrote an essay called "When a Button Is All That Connects You to the World" for the book Beautiful Code (2007) about speech software designed for Stephen Hawking. I don't think the system described in Mehta's article is this one, though.