See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/2415423 Three Heads are Better than One Article · May 2002 DOI: 10.3115/974358.974380 · Source: CiteSeer CITATIONS 90 READS 23 2 authors, including: Sergei Nirenburg Rensselaer Polytechnic Institute 243 PUBLICATIONS 3,129 CITATIONS SEE PROFILE All content following this page was uploaded by Sergei Nirenburg on 17 July 2014. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.