“Mom, why won’t this piece fit here like it should?” My son is trying to build a Lego kit, and has made a mistake in the previous steps while trying to follow the directions. He keeps fitting the pieces together,… “Mom, why won’t this piece fit here like it should?” My son is trying to build a Lego kit, and has made a mistake in the previous steps while trying to follow the directions. He keeps fitting the pieces together,…