FBI team makes their arguments

Circumstantial evidence. Imagine yourself in a traditional winter location. Lots of snow, cold. It's Sunday morning, you're just getting up, drinking coffee...and you hear a thump on the front step. You go out and open the door. there's the sunday paper. You look down the walk and there are some footprints toward your walk. Just down the walk you see your newspaper deliverer. Those are facts observed. The inference is that the paper was delivered by the delivery boy, you didn't see that but it's a logical inference. "