Oddly Wired
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vision

Your eyes do not see, they perform a search.

Yarbus's 1967 study showed that saccadic gaze patterns are task-dependent, providing foundational empirical data that supports the theory that vision is an active process of fixations rather than a passive, continuous feed.

Yarbus (1967) did not explicitly argue for a 'stitched-together mental model' or explicitly debunk the 'constant feed' model; he demonstrated that observers' eye movements follow specific trajectories based on their information-seeking goals.

You are blind to everything you aren't currently tracking.

Where this comes from

Study
Yarbus, 1967, Eye movements and vision
What the check found
Yarbus (1967) proved gaze is task-dependent, but the 'mental model' theory is an modern interpretation of his data, not a conclusion stated by him.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.