A pie in the sky?
[QUOTE=blueiris385;66935]I think that the Fourth Hokage was busy with the birth of his child when the fox appeared. QUOTE]
That is verrry likely.
I don't think he had any real prior knowledge. Perhaps he suspected that 'something' would happen but not anything specific. After all, in a shinobi world, 'something' is always going to pop up eventually. Perhaps it was as he fought that he realized just how big that 'something' is.
I suppose in some way, the mind of a person can be considered to be a dimension of sorts, and although the sharingan can't necessarily invade a person's mind, Naruto's case is a little different. His body hosts two consciences, and it sure as hell looks like another dimension. Argh...I hate the damn sharingan.
The only clear thing is that Sasuke doesn´t know fuin jutsus. He´s not a Hokage. Thinking in Minato makes me remember that Jiraiya, before facing up Pein, he gave an errand to that scroll-looking frog that look for Naruto If Jiraiya dies... Maybe, the frog will teach Naruto how to use Shiki Fuin
There has to be a reason why minato Split up the different chakras, minato must have figured or known that if he would have sealed the kyuubi inside his only son, then he knew that they would be able to control the boy and kyuubi, splitting up the chakras has to mean something, it will be brought to light when the writer gets off his sasuke loving ass and go back to the main plot
I don't believe there was any "insight" what so ever. Kishi is just making up bull as he goes along so the story will seem more interesting. This other half chakra stuff and hidden messages were all made up later, I am almost certain that it wasn't thought out this far in the beginning.