# Chapter 21 Interchangeability Test

- `CHARACTER-SPECIFIC — "his thumbs kept checking the headcap anyway because there was nothing else for them to do" (Theo) — would break if reassigned because Theo's stress response is handling objects and performing competence.`
- `CHARACTER-SPECIFIC — "He noticed his hands had picked up the utility knife... folding the blade in, folding it out" (Theo) — would break if reassigned because it is keys/tools/checking behavior under shame.`
- `CHARACTER-SPECIFIC — "one degree straighter than he'd left it" (Odile seen by Theo) — would break if reassigned because Odile's body/action under stress becomes practical arrangement.`
- `CHARACTER-SPECIFIC — "He ate the soup because it was there" (Theo/Odile relation) — would break if reassigned because Theo obeys care as logistics and Odile's care arrives as food plus instruction.`
- `CHARACTER-SPECIFIC — "a small clean rectangle of nothing that the hands in the foreground were too busy to walk toward" (Theo seeing June's canvas) — would break if reassigned because it spends Theo's useful-hands/blank-ground wound.`
- `CHARACTER-SPECIFIC — "He left the wire a half-inch low on the left" (Theo) — would break if reassigned because his usual body would correct hardware; the non-repair is the point.`
- `CHARACTER-SPECIFIC — "he was not going to invent a cheekbone he'd never witnessed" (Theo) — would break if reassigned because it belongs to his specific portrait/consent guilt.`
- `CHARACTER-SPECIFIC — "He did not put it in a crate" (Theo) — would break if reassigned because crate/delivery/freight are his care-failure vocabulary.`
- `CHARACTER-SPECIFIC — "rubbing paint out from under the thumbnail before he touched the screen" (Theo) — would break if reassigned because it joins art-making to careful handling.`
- `CHARACTER-SPECIFIC — "with his keys in his pocket and both hands empty" (Theo ending) — would break if reassigned because keys/hands are Theo's motif; June's equivalent would be wall/studies/exit, Odile's would be card/room/logistics.`

Three closest-to-interchangeable elements:
- `"He read it over once"` is close to stock; it passes because it is immediately followed by Theo's specific management reflex, the second bubble he cannot take back.
- `"The wait was terrible in an ordinary way"` is close to generic; it passes because the next line turns waiting into the urge to move an object.
- `"He looked at it a long time before he touched anything"` is close to generic; it passes because the following two errors are exact to the hidden study: the door angle and the missing hair edge.

Chapter verdict: `DISTINCT`.

`REVISION ORDERS`: none.
