They'll have information, yes. But they are mistrustful, and their language is very difficult to comprehend. Not an easy source to get information from.

The Cael are the Caelondians, the dominant society of this world. Also, the ones responsible for the Calamity. As a society, they were self-absorbed and arrogant. Individuals don't seem so bad, but the society was basically a couple decades away from imploding on itself. Before they caused their world to explode. Irony is amusing that way.