Kata

Origin. Japanese martial arts and traditional crafts; applied to organizational improvement by Mike Rother ("Toyota Kata," 2009) based on observation of Toyota practices.

Mechanism. Kata are practiced routines that become automatic through repetition. Improvement kata: a four-step pattern for moving toward a target condition — (1) understand the direction, (2) grasp the current condition, (3) establish the next target condition, (4) iterate toward it with PDCA cycles. Coaching kata: a pattern for developing others' improvement capability through structured questioning rather than providing answers. The routines embed the scientific method into daily work.

Procedure. Improvement kata: Set a direction (vision). Go to the process and grasp the current condition with direct observation. Define the next target condition — not the final goal, but the next achievable step. Run experiments to move from current to target, using PDCA. When the target condition is reached, set a new one. Coaching kata: the coach asks standard questions — "What is the target condition? What is the actual condition now? What obstacles do you think are preventing you? What is your next step? When can we see what we have learned?"

Applies to. Continuous improvement, capability development, coaching, any context where systematic problem-solving must become a habit rather than a project.

Limitations. Kata practiced mechanically without understanding. The forms are mnemonic devices for underlying principles; if the principles are not grasped, the kata become rituals. Also: kata are for conditions of uncertainty — when you don't know how to reach the target. If the path is known, just execute it; kata is overhead for routine problems.