Back on April 17, 2006, I posted an entry called "Estimating Projects: A History of Failure." I try to make entries that are not ephemeral, so I'm happy to see that people are still commenting on this one almost three years later. I'm suggesting here that you go back on the blog and read the latest comment, from "Will."
Will has many wise things to say about how to do, and not do, estimating. Will, if you're writing a book on project management, give us the title, publisher, and estimated date we can expect to see it.
Take a look, and if you have comments, add them here.