@ericburnby
try not to sound a little disappointed, but Siri has very minimal AI functions, although 'she' may have descended from an AI project, SIRI in itself is closer to a user preference algorithm than an AI and probably outsource alot of the heavy lifting to wolfram alpha, SIRI converts the voice information determines the context and parses it on
now saying that, i do know a few folks who can make SIRI feel like real intelligences....