The videophony essay is a post-1993 addition.

This is material that was added after the early draft: absent from the 1993 manuscript, present in the published novel.

In the published book. Scene 47 (pp. 144–151)

Evidence. Independently corroborated. Documented by Steven Moore's first-draft collation; Paul Debraski's survey of the draft record.

Further notes. Germ layer: a notebook entry from the early-'90s IJ-notebook period, sighted in the HRC reading room by Klein — "Audio phone conversations both let you presume the other person was paying complete attention to you and let you not have to pay complete attention to them", arrowed to "Nixon/Kennedy debates of 1960" Klein's firsthand archive essay — reads as the conceptual germ of the essay, YEARS before the text itself was added post-1993. Discipline flag carried from the source note: this is a compositional datum; do not file it under the reception-side media-prescience slug.