Tomorrow we’ll be starting to launch Wolfram|Alpha. But today (May 14, 2009) is the seventh anniversary of the publication of Stephen Wolfram’s book A New Kind of Science.

It’s a curious—and unintentional—juxtaposition. Because in a sense NKS is the intellectual structure that’s now making Wolfram|Alpha possible. And Wolfram|Alpha is the first “killer app” of NKS.

Stephen Wolfram has written a blog today that reports on the state of NKS and explains a little bit of that connection.