• Data is collected as near at the source as possible
• Who enters the date is owner
• Who owns the data enters it
• Who owns the data is responsible for its correctness
• Who guarantees, is allowed to set requirements
• Who performs a task guarantees its quality
• Who can not guarantee the quality of its output is obligated to stop the process
• Who detects a downstream failure, returns it to the previous step without correction
• Who makes a mistake solves it
• It is allowed to make a mistake ónce, in order to prevent it from ever re-occurring
• The management guarantees a system that allows the employees to perform its task within spec 

Principles:

• The shorter the throughput time, the less chance on disturbance.
• Mistakes are chances for improvement; they are allowed ónce, not twice!
• Any 'Improvement' that adds complexity is no improvement.
• Just adding investments, technology, square feet or people is no improvement.