I know what you're thinking: "What about broadband? Won't more bandwidth make WSO irrelevant?" Nope.
Even users with fast connections can get frustrated. Just ask the users of a certain west coast publication who called with a classic complexity conundrum . They said that even their cable modem users were complaining about the speed of their pages.
Cable modems are typically capable of providing throughput of 1 to 6Mbps when the whole block isn't online at once. On our T1, the pages for their site took more than a minute to display. Even though high-speed users downloaded their 100K HTML pages in a matter of seconds, page complexity and the sheer number of objects slowed rendering to a crawl.
Despite the best efforts of broadband providers, last-mile bandwidth is increasing more slowly than some have predicted . According to Nielsen//NetRatings, as of September of 2002, 71.9 percent of home users connect to the Internet at 56K or less (see Figure I.1). Broadband use has steadily increased from 5.4 percent in October of 1999 to 28.1 percent in September of 2002. At this growth rate, broadband use in the United States will exceed 50 percent by late 2004.
Although bandwidth is increasing, most users access the Internet at 56Kbps or less. As you will learn in Part I, "The Psychology of Performance," user satisfaction is directly related to snappy response times and feedback. Although B2B sites have gotten the message,  consumer sites are actually becoming slower.
According to Keynote Systems, the average download time for 56K modems of the top 40 consumer sites increased from 19.5 seconds in August of 2001 to 21.4 seconds in September of 2002 (see Figure I.2). Without feedback (and even with feedback), this is well over the attention threshold of most users.
Although our computers are getting faster, the speed of our connections can't keep up. With Moore's law leading Metcalf's, CPU processing power is increasing faster than bandwidth.