What is progress?
The Glaser Progress Foundation has a program area devoted to measuring progress. Go there to see a video or hear an audio of a 1968 speech by Robert Kennedy suggesting that GDP measures all the unimportant things or to research articles they've assembled.
Thanks to Joost Bonsen's Maximizing Progress for the link. Thanks, too, to Cliff Havener and his Meaning : The Secret of Being Alive. I read that years ago, and I'm pretty certain he makes the point that Lord Kelvin was wrong: all the important things—love, peace, faith, art, ...—share the attribute that they can't be measured by numbers. I've looked, though, and can't find the reference; if anyone can provide me the page number, I'd appreciate it.