…is a paper Nuala sent on (here). To the change blindness people, vision is inherently purposeful. This isn’t an optional attribute. Vision must be purposive. To Hockney, talking bout his photos, it is the temporal element that distinguishes his photo collages (and paintings) from static photographs. But they seem to be talking about the same thing from two different standpoints. Purpose and temporality. Hockney is clearly talking about purpose, and his point would be clearer (and apply more readily to his pictures too). The vision scientists are also clearly talking about time:

the changed object attribute needs to be task relevant at exactly the right times

Our experiments
suggest a highly purposive and task specific nature of human vision, where information extracted from the fixation point is
used for certain computations only “just in time” when needed to solve the current goal.