Essential, Illustrative, or … Just Propaganda? Rethinking John Snow's Broad Street Map
Bibliographic record
Abstract
For more than a century John Snow's iconic map of an 1854 cholera outbreak in the Broad Street area of Soho, London, has been the very definition of how to discover the source of a disease. Some now argue, however, that the map was merely an illustrative and not very imaginative graphic. Here we argue that this position is incorrect. Snow's mapping of the Broad Street outbreak produced a spatial argument that was a critical evidentiary statement. This position requires us to ask, If that is true, is the map in part responsible for Snow's inability to convince contemporaries of his argument that cholera was water-borne and not airborne? In doing so, we use mid-nineteenth-century methodologies to demonstrate that the problem was not in the map but in Snow's handling of the data. This review of a seminal study in the history of disease studies not only informs historical perspective but, in its conclusions, speaks to the utility of medical mapping in contemporary disease studies, where spatialization of a disease event remains a critical method of investigation.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".