Hal supine: Accomplice!, the blizzard, Weston (pp. 953–954)
There was a concise term for optical perspective that I again could not quite make resolve. […] (specular is what refers to optical perspective; it came to me after I stopped trying to recall it) […] The word that best connoted why the glass’s mouth looked slotty was probably foreshortened.
Context
Running under the big Weston failures, a comic miniature of the same machinery: word-retrieval jamming ("again"), then releasing only once the trying stops. The parenthetical states the involuntary-return law outright — which is exactly how the blocked Orin memory will surface two pages later. Kin to 132's unrecallable child-actor name; the etiology is the same.