### Summary

This paper discussed human perception of motion. The authors discuss why humans do not perceive motion based only upon low level visual cues and present several examples that showcase why this is so. In these examples they are able to prove that the motion a human perceives is different from actual measurements that can be made.

### Problem

In order to convey convincing motions on screen, it is helpful for one to understand how it is that the motions will be perceived by humans. The actual, "physical" motions are irrelevant in film, for example, the only thing that matters is how they are perceived by the audience.

### Key Ideads/Contributions

1. A discussion of why low-level visual cues are not sufficient for determining a human's perception of motion.

2. A discussion of why exact sequences of motion are not stored by the mind and are unable to be replayed by the mind. 

3. The conclusion that the mind's actual representation of motion is more like a comic strip or storyboard, where periodic shots at important parts of the motion are stored through which the human can understand and replay and approximation of the motion.