Website Response Times An Article by Jakob Nielsen www.nngroup.com Users really care about speed in interaction design...A snappy user experience beats a glamorous one, for the simple reason that people engage more with a site when they can move freely and focus on the content instead of on their endless wait. 0.1 seconds gives the feeling of instantaneous response. This level of responsiveness is essential to support the feeling of direct manipulation. 1 second keeps the user's flow of thought seamless. 10 seconds keeps the user's attention. A 10-second delay will often make users leave a site immediately. uxperformanceinteraction
Pictures and words He had only one explanation for this fact: things have to be transmitted this way because they were made up from the pure life, and this kind of life cannot be captured in pictures or words. Because people become fascinated with pictures and words, and wind up forgetting the Language of the World. Paulo Coelho, The Alchemist Words and Images