The Five Whys approach originated with which company?

• A. Toyota Motor Company
• B. Apple
• C. Microsoft
• D. General Electric

Answer: (A)

The main idea is a simple root-cause analysis technique: keep asking “Why?” to peel back layers of a problem until you reach the underlying cause, so you can fix the process rather than just treating the symptom. This approach helps teams move beyond quick fixes and spot where a system or workflow needs improvement, often leading to durable solutions that prevent the problem from coming back.

This method originated with Toyota Motor Company as part of the Toyota Production System in the postwar era. It was developed to help address defects and inefficiencies by encouraging deep investigation into processes, rather than blaming people. While Taiichi Ohno is commonly associated with popularizing it within Toyota, the practice reflects Toyota’s broader emphasis on continuous improvement and waste reduction. Because of this history, the Five Whys is strongly linked to Toyota and lean manufacturing, not to Apple, Microsoft, or General Electric.