Can one man and a mantra of "radical simplicity" change the world of Web development? David Heinemeier Hansson, a 26-year-old Copenhagen native, has built a "framework" to help Web developers be more productive and has released the package of tools through an open-source project. The trick, said Hansson, is to "slaughter the holy cows," the well-understood ideas of computer science that dictate how programmers work. In many cases, software vendors design products for difficult problems, an approach that leads to excess complexity, he said. I'll watch this framework from now on, as it is close to what I have in mind.