DARK HORSE WORKS ← all seven lenses Concept 05 / The Keystone
The Keystone Leverage

Find the one block holding up the rest.

Six candidate cruxes, plotted by evidence and leverage. One of them, if it moved, would move the most.
Most likely crux Candidate crux Shared evidence
After the leverage read

You’ve found the one block. Now see what rests on it.

This lens ranks the cruxes and names the keystone. It is the same place every other lens converged: pre-run readiness. The verdict is one click away.

Back to all seven lenses and the verdict →