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
Stands up and hums The ruin [at Marfa] itself, in fact, set the terms for the kinds of solutions Irwin would propose, since its absent roof and floor, and its shockingly wide-open sequences of windows, which overlap and align with one another from different points of view on the site, already presented a rich, thoroughly keyed-up set of perceptual events before Irwin ever considered the project. It was already one of those sites that, in Irwin's words, "stands up and hums" thanks to the rich quality of their perceptual phenomena. Matthew Simms, Robert Irwin: A Conditional Art Economy of line