Between Gandalf's fear of Moria, and the amount of time that has obviously passed (due to the condition of the remains of the dwarves in Moria), why is Gimli so unaware of the fall of his kin?
At least in the movie, Saruman's line;
"Moria... You fear to go into those mines. The dwarves delved too greedily and too deep. You know what they awoke in the darkness of Khazad-dum... shadow and flame."
Would seem to indicate Gandalf not only knows of Balin's defeat, but even that the defeat was not purely because of orcs or goblins. (The dwarves book of records references the drumming that is a precursor to the appearance of the Balrog - indicating the downfall of the dwarves in general was not due entirely to warring with the orcs).
I have a hard time believing Gandalf would have been so reluctant to go into Moria if he believed the Balin and his group of dwarves had been successful and wasn't more aware of its current state. I figure even if he wasn't sure, he was pretty convinced they had not survived. So why does Gimli seem so clueless (yes, I understand wizards are wise and a little smarter, but Gimli wasn't a neanderthal either.
I do not remember this part of the book really at all. If things are entirely different in the book it wouldn't surprise me one bit. If the answer is that Jackson took a liberty here for the sake of the movie's plot, I'd love to know the comparable aspects of the original version in the books as are applicable.