See also http://www.metafilter.com/70699 http://www.metafilter.com/70699 (and the recently published printed version, although IMO the material added beyond the

See also http://www.metafilter.com/70699 http://www.metafilter.com/70699 (and the recently published printed version, although IMO the material added beyond the original article is not worth getting the book for, which is a shame).