The five steps in the lean thinking model, in order are: O 1. Identify push factors, 2. Develop strategies to turn those factors into pull factors, 3. Assess the value added by steps one and two, 4. Strive for perfection, 5. Repeat the process on a regular basis. O 1. Define value, 2. Identify the value stream, 3. Make the value stream flow, 4. Implement a pull system, 5. Strive for perfection. O 1. Define value, 2. Identify the pull factors, 3. Identify the value stream, 4. Make the value stream flow, 5. Revise until perfection is achieved. O 1. Identify unproductive activities that need to be reduced, 2. Identify push factors causing those unproductive activities, 3. Develop operations so that the work flows smoothly, 4. Strive for perfection, 5. Evaluate the value that has been added