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
You can taste it with your eyes It was one of those good rides, where the motion of the train is soothing, and the interior temperature pleasantly warm but not hot. I imagined the subway car as a rapidly moving load of bread. The motto "You can taste it with your eyes" occurred to me. Nicholson Baker, The Mezzanine Substitutes for the thermal experience food