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
There it is again Apparently architecture does the same job as set design, "it creates units of environment, atmosphere, or events"—whatever you wish to call them—but with more weight, carrying more material, slower. This is why it can raise the curtain more times and repeat "there it is again" for longer. Perhaps for this and other reasons there are periods in the history of architecture in which stage design or the folly, for example, have been an effective field of experimentation for serious architects. Smiljan Radić, The Circus Follies architecture