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Gaman

The Persist phase of the Ishi Spiral: governed persistence.

Effort continues for as long as the boundaries hold and the original decision stays valid. Persistence draws its legitimacy from a prior decision that set scope, duration and acceptable cost.

AHA (pronounced A-Hey) governs the effort while it is under way.

The capacity to persist while judgement remains intact.
Gaman above its spiral in brush ink, calligraphy by Shunbō Inoue
Calligraphy: Shunbō Inoue, Imabari City, Japan.
Three paperback copies of Ishi: The Discipline of Determined Intent by Gareth A Holebrook, foreword by L. David Marquet

IshiThe Discipline of Determined Intent