Originally posted by dadudemon
Well, they made it seem like it would be more than just a few years...like maybe a couple of decades.
Still nothing to something that has lived for hundreds of years. If the Kyuubi does die, it would likely also lose its perception of time, so it would only feel like a moment. After that, it would once again be free.
Originally posted by dadudemon
I live with and speak to my wife every day and I forgot how old she was turning, this year. I remembered, but it just wasn't coming to me at first. It could also be a formality to ask how old someone is rather than guessing. There's also the fact that Minato said, specifically, that he "saw that" from inside of Naruto's mind/spirit place/thingie which seems to be exactly like the Kyuubi's perception. Like Q99 pointed out, he has the option to look but doesn't have to. He may have simply forgotten how old Naruto was or lost track of time.
Except Minato hasn't been conversing with Naruto every day, or watching his every step.
Him losing track of time (or having no perception of time) is more plausible seeing as he is confined to Naruto's unconscious mind apparently, rather than him simply forgetting.
The thing is that Minato only left a sliver of his chakra into the seal so that he could help Naruto once more. Half of the Kyuubi's chakra on the other hand has been sealed into Naruto, to the point where those two can regularly converse within Naruto's mind, and even have a 'battle'.
And there's also the fact that Minato stated how he had looked forward to seeing how his son had grown (and I doubt that has anything to do with physical age). If Minato had the same level of perception within Naruto that the Kyuubi had, he would already have known.
I also will note that Minato only showed knowledge of fairly recent events surrounding Naruto.