John McCarthy, inventor of Lisp, dies at 84

[findinglisp]

Fly all your Lisp flags at half-mast:
http://www.technologyreview.com/computing/38977/

[Eudoxia]

Got this from LessWrong, he had a bunch of very interesting essays about technological progress: http://www-formal.stanford.edu/jmc/progress/index.html

I haven't read all of them, but there are many and it looks like he left a wealth of insights that were left mostly ignored. Such a sad thing.