[pmlnr]

I always wondered what is not interactive in pressing a form submit button, being brought to another page with results.

What is the definition of interactive?

[cies]

Oh easy. Just try the HTML only version of GMail, I believe you will quickly notice the lack of client side interactivity.

Maybe just a bit of Babylonian language confusion. Static, to dynamic, to server-side-dynamic-vs-client-side-dynamic...