Thoughts on Wolfram Alpha and Artificial Intelligence

I've been thinking about the announcement of the natural-language search engine Wolfram Alpha, which supposedly makes Google seem like a crude toy.

Humans have so many inherent limitations of perception. It is easily conceivable that within this century we will create a race of machines that are smarter (wiser?) than we are. (Sony is projecting 2011 for the year a computer can mimic human thought convincingly, the old Turing test.)

It all goes back to that famous saying of J.B.S. Haldane that the