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.

Areas of knowledge

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.