| Category | Count | Share | Source |
|---|---|---|---|
| All doctorates | ~55,000 | 100% | NSF Survey of Earned Doctorates, 2023 |
| Black doctorates | ~2,800 | ~5.1% | NSF Survey of Earned Doctorates, 2023 |
| Black STEM doctorates | ~1,100 | ~2.0% | NSF Survey of Earned Doctorates, 2023 |
| Black CS / Engineering | ~500 | ~0.9% | NSF SED + CRA Taulbee Survey |
This plate uses nested squares to show part-to-whole relationships without a coordinate axis. The area of each square is proportional to the number it represents: the outer square is all doctorates, and each inner square shrinks by the ratio of its population to the total. The side length of each square is proportional to the square root of its share — so a population that is 5% of the total occupies a square whose side is roughly 22% of the outer square's side. The visual result is that small percentages produce dramatically small squares, which is the point.
Du Bois used proportional area extensively in his 1900 plates — nested rectangles, proportional circles, and scaled blocks. The nested square is a direct descendant of that tradition: the simplest possible geometric comparison, requiring no legend, no axis, and no explanation beyond "look."
This is a preview plate for conversation, drafted April 2026. The production plate for The Du Bois Reappraisal, Volume I will cite exact figures from the most recent published NSF Survey of Earned Doctorates and CRA Taulbee Survey. No figure will appear in the production plate that cannot be traced to a primary source.