[16] Because of the huge obtrusive mass of his forehead, Rogers the bulls' view of the universe was from two eyes each with their own non-overlapping hemispherical view of the world. Since there were two separate visions, Rogers had reasoned, that meant there must be two bulls (bulls not having been bred for much deductive reasoning). Most bulls believe this, which is why they always keep turning their head this way and that when they look at you. They do this because both of them want to see.