What a huge plot hole, Narnia...

Okay. I noticed this while watching Narnia: The Dawn Treader, and I'm pretty miffed about it.

So, in the last one, the one where they introduce Prince Caspian, it has been a year in the real world and abot 3000 years in Narnia. Now in this movie, it's been two years in the real world, and, based on the last one, it should be about 6000 years later in Narnia.

But no.

Caspian is still alive and well, and it appears to be only a few years later. What the hell, man? I mean, what a horrible plot hole! And if it is 6000 years later, how is Caspian still alive?! I mean, the crazy mythical beasts I get, but Caspian is human(or at least has the life span of one). He should not be alive.

Gah! I just find that a horrrible plot hole. They leave it so unaddressed.