The document provides an overview of the lean manufacturing concept of Jidoka, which has two main goals. The first is to allow machines and operators to detect abnormal conditions and immediately stop work. The second is to separate the roles of people and machines for more efficient work. Jidoka is considered one of the two main pillars of the Toyota Production System, along with just-in-time production. The document outlines the four main steps of Jidoka: detect abnormalities, stop, fix or correct the immediate issue, and investigate the root cause and implement countermeasures. It emphasizes that quality must be built into the manufacturing process through techniques like poka-yoke devices that allow automatic detection of problems and stopping.