It's pretty much the same principle that allowed Ricardo Montebans crew to man an entire starship while being essentialy Gorton's fish sticks only days before.
Not really, Khan studied the Enterprise schematics when kirk revived him. Also Kirk gave him access to Starfleet database when he marooned him on the planet. He had 15 years to learn. He also injected mind creatures into some of the key crew of the Reliant to help him operate the ship.
In new Trek Khan was DESIGNING the most advanced starship of the fleet only months after being revived. Ridiculous.
I also love how they warp away from Klingon space and just appear by Earth's moon seconds later after the Vengeance disables their warp drive.
There was no reason to make that character Khan other than a lame attempt to appeal to Trekkies. It was <!--[if gte mso 9]><![endif]-->disingenuous. Though, nothing was more disingenuous, cheesy or fake then when Spock yelled "Khan!" Even my 13yo daughter cringed at how lame that scene was.
PS. Don't get me started as to what the need was to make the Enterprise a submarine when they have transporters and shuttle craft. Oh yea, they had to have a Star Wars like scene with a big fish looking at them.
Red Matter, Cold Fusion, Scifi for today's generation of the dumbed down audience.....
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