Together, they planned that there should be a sun, a moon, and day and night. They decided to keep the other Coyote, First Angry, away from their planning, because it was he who had brought unhappiness.
I find it interesting that the Coyote is a bad symbol even though they have Great Coyote-Who-Was-Formed-In-The-Water. I find it funny that they finally admit here that First Angry is their main source of problems here though.