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
The Design Diagram An Idea by Charles Eames & Ray Eames www.eamesoffice.com This Eames drawing, often referred to as the Design Diagram, was created for a 1969 exhibition at the Louvre entitled, What is Design? Charles and Ray mailed it to the exhibition curator to augment their answers to a series of questions she had posed. The Design Squiggle designprocessconstraints