Drawings meant for no one on the ground
From Latin America and the Caribbean·An enduring case
The Nazca lines have been read as astronomical calendars, ritual pathways, water markers and stranger things, with each era's favourite explanation tracking that era's preoccupations. The geoglyphs constrain interpretation without settling it. Some evidence underdetermines every theory brought to it.
The concepts this raises
Each of these gives a class a different way into the same case.
- EvidenceGrounds of Knowledge
- What is offered in support of a claim. Evidence is not the same as proof: it raises or lowers how likely a claim is, and its force depends on how it was gathered, what it was gathered for, and what else it is consistent with. Asking what would count as evidence against a claim is usually more revealing than listing evidence for it.
- InterpretationThe Knower's Lens
- The work of making something mean something. Data, texts, images and events do not announce their own significance; the categories a knower brings determine what is even available to be noticed, which is why disagreements about interpretation are rarely settled by looking harder.
Where it sits in the knowledge framework
- Perspectives
- Whose viewpoints have shaped this knowledge, which viewpoints have been absent, and how the discipline handles internal disagreement. This element includes the historical dimension: how the standpoint of a field has moved over time.
The same ideas, somewhere else
Cases that raise a concept this one raises, but in a different area of knowledge or a different part of the world. That contrast is the point: it is what shows a student the concept travels.
- Southeast Asia
The city the lasers found under the jungle
Airborne laser scanning over Angkor stripped away the canopy digitally and revealed a vast low-density urban sprawl around the temples, overturning estimates…
Enduring · History
- Evidence
- Interpretation
- South Asia
The third umpire and the ball that never arrived
A batter is given not out. The fielding side reviews. On the big screen, a tracking system reconstructs the ball's flight, and then continues it past the point…
Enduring · The natural sciences · Mathematics
- Evidence
- Interpretation
- Certainty
- Southeast Asia
The small skeleton that split palaeoanthropology
The metre-tall skeleton found on Flores in 2003 was declared a new human species by some researchers and a diseased modern human by others, with both camps…
Enduring · The natural sciences
- Evidence
- Interpretation
- Africa
Truth commission, plural truths
South Africa's Truth and Reconciliation Commission explicitly distinguished kinds of truth, factual, personal, social, restorative, and accepted survivor…
Enduring · History
- Evidence
- Interpretation
- Southeast Asia
Perpetrators, re-enacting
The Act of Killing invited men who carried out Indonesia's 1960s massacres to restage their killings in the film genres they loved, and the perpetrators' own…
Enduring · History · The arts
- Truth
- Interpretation
- Global
A museum for art with no artist
A museum devoted entirely to AI-generated art opened in Los Angeles in 2026, while courts have held that copyright protects works of human authorship, leaving…
Current · The arts
- Interpretation
- Responsibility