5 Whys: A retrospective technique

https://docs.google.com/presentation/d/e/2PACX-1vQatQl6JGIq9Q5MOgimizcfweOi6ATTWPVLjPlZcYIXH1ztN2OtMHy-lz5xniviw6ir9zHEwSG8Hlpx/pub?start=false&loop=false&delayms=3000