The wikipedia edit doesn't cite any sources, but I've heard it from his coworkers at ITA and from https://twitter.com/CommonAngels/status/244137900336361472 htt

The wikipedia edit doesn't cite any sources, but I've heard it from his coworkers at ITA and from https://twitter.com/CommonAngels/status/244137900336361472 https://twitter.com/CommonAngels/status/244137900336361472 Very sad to hear it. I really enjoyed hearing Dan's stories from his early days at MIT and his renewed interest in Common Lisp in the past few years was great. He had a great Google Tech Talk on YouTube/Google Video a few years ago about ITA, but sadly it was taken down for some reason.