I suppose it depends on how stict you are about what “coherently” means. A fictional universe is not the same as a possible universe and you pobably could write about a universe where you put two apples next to two other apples and then count five apples.
I suppose it depends on how stict you are about what “coherently” means. A fictional universe is not the same as a possible universe and you pobably could write about a universe where you put two apples next to two other apples and then count five apples.