Nifty article about voice recognition. He talks about the latest and greatest speculations, and qualifies the "these things are in sight" by saying it's in sight in the same way he can see the moon outside his windwo ;_)
You did FINE in the algebra stuff -- it's not that the capability isn't there -- but 42 - 36 should be achievable without a calculator. SOmetimes calculators *have* been abused, and soemtimes expectations ahve been too *($#@ low.