When Wolfram Alpha launched, I plugged a few questions into it and was fairly impressed with its abilities. Then I tried to stump it. It didn’t take long: the question “how do you feel?” generated an error. I told a few people about that, and my Mom actually sent Wolfram feedback about it to see what they’d say.
Well, it took them two years, but the creators of Mathematica have finally come up with an answer:
I love the “Related Questions” in the right sidebar, too.