Facts and Data

Facts and data are the supporting evidence for making decisions. Gathering facts and data is a key part of any problem-solving process, but it becomes particularly important in Lean.

Making frequent changes, as companies do when they create a continuous improvement culture, also increases the number of opportunities to make mistakes

The risk of these errors and defects (both forms of waste) is greatly reduced by learning how to make decisions and do countermeasures based on facts and data rather than on conjecture and opinion.