You know what's totally plausible? That hitting F6 and F7 prompted for confirmation, but using the same prompt - and he just hit "Y", "Return" as he'd done 1000 times before (just like everybody does with the UAC dialog in Windows 7 today), and that bit didn't make it into the story because it's totally irrelevant to the point he's making. Heck, it probably wasn't even F6 or F7. If he's a normal human, he likely can't remember.