Research index·Book chapterPrefaceColumbia University Press eBooks·31 Jan 2011DOI10.7312/will15262-prfBook chapterPrefaceColumbia University Press eBooks · 2011 · SubscriptionDOI10.7312/will15262-prfReadRead at the publisherSaveCiteAdd to literature reviewPaywalledThe full text is at the publisherOpen it at the publisher to read it.Read at the publisherDiscussionAdd to the discussionTopicsComputer scienceRelated papersMoreDetailsPublished, publisher, languageSuggest a correction or report