““Recall our discussion of the pendulum. Its position at a given instant does not fix its subsequent behavior. Suppose a photograph shows the pendulum hanging straight down. This may mean either of two things: The pendulum is at rest, or it is in the process of oscillating through its lowest point. In the first case, it will remain in the observed position; in the second, it is just moving through. But if we simultaneously know both position and velocity, we can predict the behavior of the pendulum for all future times. Knowing only the position or only the velocity will not suffice. Conclusions based on perceptions need more than one instantaneous image; they need a sequence of images. One photograph will give a proper description of reality; another one, taken a few moments later, describes another such aspect. To draw a conclusion based on perceptions, both photographs are required.””
![“[Photography] tells you that every second in time is different from every other second. You want people to understand that the image in front of them has something to do with the truth, and it can never be repeated.” quote by Roger Ballen](https://sms4smile.com/quotes/img-quotes/a90/roger-ballen-34238_different_photography-tells-you-that-every-second_2597063.jpg)
