testimony or witness reports, police reports, and with the trail of evidence going down that direction. >> the trail of evidence, you'd great with me, is just a trail. it by itself doesn't is a direction, right? in other words, whether it's going right to left or left to right as you're looking at it, the places where things are found doesn't independently have a direction until you start pringing in what other people have said about how it happened, correct? >> correct. the reason for the arrow is moving from the one witnessed event down to the next witnessed event. i didn't add anything in between there in terms of movement of the figures. >> because the animation cannot show it because you have no idea how it actually happened, right?