She’s the friend we all wish we had.  But how does she work? With the press of a but­ton, an iPhone 4S user can ask Siri a ques­tion, and she responds with spot-on infor­ma­tion or a witty comeback.  At least that’s how it looks on paper. Apple’s “new” rev­e­la­tion brings a lot of atten­tion to the mag­i­cal powers […]