Claims about compositing, perspective, and edition discrepancies are attributed to the Tout‑Fait essay by Rhonda Roland Shearer et al. (2000; updated 2019).
Hatrack (Duchamp) Trébuchet (Coatrack) Fountain (1917) Bicycle Wheel (with Stool) In Advance of the Broken Arm Related Works (Comparanda & Methods) Illustrations Index (Tout-Fait) References — Duchamp Readymades
### Scope & Source Time‑series snapshots: dates objects were seen/represented (2D/3D), not originals alone.
Empirical notes: hook counts/curvature, blueprint vs. edition mismatches, perspective/compositing cues.
Primary source: Shearer, Alvarez, Slawinski, Marchi; textbox by Stephen Jay Gould, “Why the Hatrack is and/or is not Readymade,” *Tout‑Fait* (2000; upd. 2019).