Rock is cause, and effect! An amusing traveler answered with a smile. Letting out a chuckle, I asked how so? Reaching his hand for a rock from the street, He rolled, it stopped after a moment. He looked at me in the eyes, then walked away. It was then, I understood. Exerting force upon it, causes it to roll. Where it lands, is effects… Sowing a seed incurs cause. Returning next summer, a sprout took its place. — this is effect.