East of the Great Rift in the Eastern Shaar once stood a land of titans. This empire rose at the dawn of time in Faerun, and its lords thought to challenge the gods in their arrogance. In punishment, the powers cursed the reigning monarch of the land with fascination and his brethren with devotion. The powers then dropped a star onto the land. The impact of the fallen star created a huge valley later known at the Sea of Fallen Stars. Slowly picking up speed, the ball rolled through the titan nation and onward to the south.
Unable to contain his curiosity, the titan king ran off after the bouncing sphere and his followers dutifully followed his tracks. The meteorite rolled on and one until it reached the Great Sea and vanished into the depths. The monarch dove into the sea, and, lemminglike, the entire titan race down in after him, never to be seen again.
Ashamed at the destruction they had wrought, the powers vowed to keep both curiosity and loyalty firmly in check to avoid such disasters in the future. The have done so to this day, preventing both new ideas from being pursued with any speed and the intelligent races of Toril from ever fully cooperating.