Luis Arnal speaks about usability in Latin America, about poverty as the mother of creativity (imagine usability testing at stop lights), and about the importance of observational research.Luis is founder and president of In/situm (www.insitum.com).You can read his article 'No pregunte, observe' online (PDF, in Spanish) (http://tinyurl.com/35bcch) .Luis' 2003 article which I quote from during the interview is also online (PDF, in English)  (http://tinyurl.com/2gmgr9). Luis mentions Spencer Tunick's latest and largest nude shoot (18,000 people at the Zocalo plaza in Mexico city). Here is a short link to photos of the event on Flickr: http://tinyurl.com/2bvaoeThanks to Stuart Celarier of Portland Jugglers (www.portlandjugglers.com) for permission to use the image of the Toltec juggler as an illustration for this episode. Stuart is a software engineer who blogs at www.ferncrk.com/blog and points out that the ball over the juggler's head was not present in the original.Duration: 17:30File size: 8MB