A grammatical distinction Cameron McEwen carries into the dialogues as an analytic tool: the of in a phrase like "a construct of somebody's mind" can be *subjective (the mind does the constructing) or objective* (the mind is what gets constructed). The same words carry both, which is why he treats sorting them as a description of thinking itself rather than a point of usage. Its fullest exposition is dialogue 81, where Carolyn's question about the Tech Body cannot be answered until the genitive is settled.
Across the dialogues
Promoted from a passing grammatical aside into the instrument the series uses to settle a metaphysical question — six minutes spent establishing that the same words carry two readings, so that "whose mind?" can be answered without conceding a mind that does the constructing
The distinction is introduced not as grammar but as a fork in what is being asserted — one reading leaves a maker standing behind the Tech Body, the other does not.
"objective genitive and one type is subjective genitive. So the of, a construct of somebody's mind, the subjective genitive would be that the Tech Body is a construct put together by or belonging to somebody's mind."Cameron McEwen, The Resonant Interval, Dialogue 81 (21 Dec 2023), 58:59
The teaching example strips the question of its metaphysics — possession versus undergoing, decided by nothing in the words themselves.
"take the ball of the boy, right? So the ball belongs to the boy. And objective genitive is the punishment of the boy. The punishment does not belong to the boy, it's done to the boy."Cameron McEwen, The Resonant Interval, Dialogue 81 (21 Dec 2023), 1:00:36
The objective reading is forced rather than preferred — with no somebody and no singular mind left standing, the subjective reading has nothing to attach to.
"That is to say that the Tech Body is a construct that puts together somebody's mind. And remember that we've already seen that the somebody is a nobody,"Cameron McEwen, The Resonant Interval, Dialogue 81 (21 Dec 2023), 59:31
The ambiguity is a feature of the language, not a failure of the speaker — which is why the six minutes Bob spends unable to hear the difference are not a misunderstanding but the point.
"the exact same words express the subjective genitive and the objective genitive. That's exactly why it can be difficult."Cameron McEwen, The Resonant Interval, Dialogue 81 (21 Dec 2023), 1:04:03
The conclusion inverts the ordinary picture of mind — looking, minding and identity-building are all products of the construction rather than its agents.
"in this particular case, there's only the objective genitive, which is somebody's mind is the what of the construction."Cameron McEwen, The Resonant Interval, Dialogue 81 (21 Dec 2023), 1:04:49
Connections
The distinction's fullest use — whether the Tech Body is a construct made by a mind or a construct of a mind.