The moving-image comparison can be analysed in two ways:
1. Movement combines with another attribute to make the total scene.
2. The variation of movement itself supplies the intended configuration.
The difference is whether non-motional features are integral. If brightness could be removed without changing the intended point, motion would be primary. If removing light destroys the image, brightness belongs to the point as well.
The analysis should resolve what actually matters in the comparison rather than simply attaching technical names to a poetic expression.