We're used to print. Open up any book, and in every copy of the book, page 10 looks the same. Websites started off that way; they were static, fixed, unchanging. But now we can connect databases to our websites and generate the page at the moment a person asks for it. The page is built just before it's delivered, just like a Land's End monogrammed sweater.

The dynamic page can contain news, weather, prices, or inventories. School pages contain daily cafeteria listings and homework assignments. Ski resort pages contain slope reports. Spa pages contain current special packages. Web pages aren't printed in books; they can vary from one moment to the next.