So let's look at each of these points and think about whether we're moving forward, backward, or neither. So at this point right over here, at that moment, we're about two and a half meters in front of our starting point. We're at a positive position of two and a half meters. But as time goes on, we are moving backwards closer and closer to the starting point. So this is, we are moving backward. One way to think about it, at this time, we're at two and a half meters. If you go forward about half a second, we are then back at our starting point.