I agree. I don't see how it could work so nicely for everything. Though it seems that he picked a specific category (Mathematica) which helps quite a lot on what to do with the query.
Take the example with the first names: "Andrew", then "Andrew John" (or whatever it was) which compares the two names over the years. What happens if I type "Elton John" now?
The screencast was impressive but I'd like to try it by myself (which should be soon apparently) to realize how powerful it can be.
That everpresent "Mathematica" blurb on the screens doesn't represent any kind of site category, I don't think; the whole site is driven by Mathematica behind the scenes. The Mathematica link often visible looks like it goes to some sort of representation of that behind-the-scenes stuff, but that's just a guess.
Oh ok, thanks for the info. Since I saw a big list of categories at the end of the screencast and remembered that "Mathematica" was there all along, I figured there was something to it. I just have a hard time believing that that kind of results can be achieved without more information than the keywords.
Take the example with the first names: "Andrew", then "Andrew John" (or whatever it was) which compares the two names over the years. What happens if I type "Elton John" now?
The screencast was impressive but I'd like to try it by myself (which should be soon apparently) to realize how powerful it can be.