I'm Touched
GigaOM has a post about touch-based computers, noting that the pioneer in this field was HP. Accompanying the article is a pic of HP's trailblazing machine, the 1983 HP-150.
Reader, I marred it!
(To explain, I managed to delete a review of the self-same machine that I was writing on it, by stabbing my finger at the wrong point of the screen. An article I had not backed up. It was the last such article - well, so far....)