Source
Litherland & Mørch (2021), LIT-1037, read in NOTE-733: §4.2 (data), §5 (Tables 2–7, Fig. 3), §6.1.2–6.1.3 and §6.2.
What was actually shown
A participant-observer case study of the Mona Lisa region of the 2017 canvas.
- Scale. About 77,000 accounts placed 243,103 tiles in the region. The r/monalisaclan forum sample has 161 accounts.
- Design off the canvas. The image began from one user’s simplified sketch. Once the forum opened (about hour 23), members posted linked design images (“Use this as a guide”), and changes discussed in the forum then appeared on the canvas: the tag’s letter widths, the frame, the flag. “The decision of what to add or replace was (for the most part) made at the group interaction (meaning) level”.
- Gatekeeping. Accounts central in the reply network accepted the Swiss flag within 40 minutes and refused to route the frame around r/trees’ objects. The authors: high-centrality users “had the power to allow and/or stop suggestions from being acted” on.
- Negotiated vandalism. “The boundary between creative evolution and vandalism was not clear but a tradeoff to be negotiated”. Additions were absorbed if talks went well and deleted otherwise, “especially when the stakeholder was a smaller community”.
- Behaviour misleads. A Swiss-flag member offered to help build the Mona Lisa, so “community affiliation cannot be identified with quantitative measures alone”. Placements also cannot tell whether an image was “the result of collaboration or conflict”.
This could have come out otherwise. The forum could have trailed the canvas, recording what placers had already done. In the matched threads and snapshots it led.
What this does not say
- It does not measure influence. “the causal relationship between WAD or power and user action remains unclear”. Most placers never posted, and how many followed the blueprint is unknown.
- It is one artwork. Fig. 4 shows similar composites elsewhere, and that is all.
- The first design was not a template followed by thousands. The image was recognizable before the forum existed. Planning took over a growing image.
- “Instruction” in the title is not planners’ instruction. The paper’s instruction is Reddit’s rules (top-down). Blueprints and gatekeeping are in its “emergence”. The record’s interest, authority exercised through plans, is in the paper’s data, not its headline contrast.
- No method is tested. The paper does not try to infer endorsement from placements and fail. It argues that such inference cannot work, and gives one counterexample.
Connections
- CLAIM-272 (supports). Under an equal cooldown, a forum of 161 set what about 77,000 accounts placed, and a few members gated it. That is the claim’s mechanism, a plan directing others’ actions, observed in one case. How much influence it carried is not measured. Wu & Silva (THEORY-216, NOTE-724) add a second source of inequality that needs no plan: unequal use of the cap.
- CLAIM-279 (corroborates). Whether an addition is damage or part of the image was decided by negotiation, relative to a design that itself changed. The Swiss flag was an intrusion on the first design and part of the second.
- QUESTION-084 (bears on). It argues for the question’s second horn, that a record of coordination is needed, and shows what such a record reveals: gatekeeping, diplomacy, and an affiliation the placements would misread. It does not show that no behavioural method could do the job.
- CLAIM-280. A quarter of the region’s tiles went to maintenance with no new objects. The design was renegotiated while the forum went on. Product and producer are visible separately here, but turnover is not measured.
- CLAIM-086. The gatekeepers’ influence over what counts as the image, and so over which placements count as repair, is the form CLAIM-086’s 2026-10-13 note describes. It illustrates the note and does not bear on the claim’s institutional thesis.
- THEORY-224. Adams et al. find that local canvas dynamics miss designs coordinated off the canvas. This paper shows that coordination directly.