When sharpened sticks are used as arrows (instead of adding a feather to them) and fired at the environment, instead of having a high chance to stick into it's target and become stuck at it's terminating angle of flight (sticking into it's target from the direction it was fired) they always default to the same angle.
When you shoot a sharpened stick, it will stick to the environment where it lands but the angle the stick will be stuck into the ground will be incorrect (all sharpened sticks point the same way when sticking into an object after having been fired)