tokatlas
Teacher account

Ninety seconds to midnight

Global in scope·A current case, last reviewed September 2026

The Doomsday Clock compresses expert judgment about nuclear and climate risk into a single metaphorical time, set each year by a board and reported worldwide. It carries no units and no model, and it commands attention no technical report matches. The communication succeeds exactly where the precision is surrendered.

The concepts this raises

Each of these gives a class a different way into the same case.

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.
ResponsibilityKnowledge and Society
What a knower owes as a result of knowing, or of being in a position to know. It covers obligations in producing knowledge, in passing it on accurately, and in acting or refusing to act on it, including the responsibility taken on by choosing not to look.

Where it sits in the knowledge framework

Scope
What this area of knowledge is about, what problems it takes as its own, and where its questions stop being answerable by its methods. Scope is where you examine why a discipline exists at all and what it deliberately leaves to others.

Areas of knowledge

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.