I learned over on the FreedomBox forum that the writer of Imagine is Carl Jarvis, a blind man from Washington State. The article was apparently published in The Braille Forum, the American Council of the Blind’s monthly magazine, but I have not yet been able to locate the issue containing this work. I just want to make it clear that, at the time I redistributed the Imagine article, the writer had been anonymous for several years, and absolutely no plagiarism was intended.