Doctor Who world background
Carrionites from the Rexel lineage, one of the oldest and most powerful planets in the universe. Long, long ago, the Carrionites developed a science that was not based on numbers, but on words. When human beings follow mathematical laws and continuously derive formulas and equations to explain and conceive the universe.
The Carrionites insisted on another path. Their science makes Carrionites look like witches chanting incantations and using magic. But the ancient gods found a word spell that drove the Carrionites into endless darkness.
It was thought that they would never come back.