I was playing Kingdom Hearts today, and was in the hallway of Hollow Bastian where the princesses are, and the way they were lined up in their tubes reminded me of something...
Then I recalled that in CT, near the end of the Ocean Palace (the risen one, not the original), you come across a room where you see clones of all the party members being held in tubes.
So the question is... what do these tubes/clones signify? What does it mean? Or is it just there to create a creepy atmosphere (the boring answer, but supported by the Nu committing suicide shorty after while proclaiming the end of the world)?