Hi - my husband and I just saw STID and I have an initial question - why did Kirk and Spock seem to not really know who Kahn was? I thought the Eugenics Wars still happened in this timeline (in some form or another). Wouldn't there be some information in the Enterprise computers if they input the name Kahn? Or did they just need a reason to bring in Nimoy for a cameo?
God knows what results they would get when they input Kahn. Or Khan for that matter.
I find it absolutely plausible that Kirk and co. wouldn't know who Khan was.