Asking “Why?” may be a favorite technique of your 3-year-old child in driving you crazy, but it could teach you a valuable Six Sigma quality lesson. The 5 Whys is a technique used in the Analyze phase ...

Planning is a key part of staying productive, but it has to be done right. To succeed, you need to understand why previous attempts at planning didn’t pan out. Conducting a personal after-action ...

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The 5 Whys is a well-known problem-solving tool. Initially developed in 1970’s by Sakichi Toyoda to help improve the Toyota production, it is now taught in business schools across the country – and ...

Have you ever felt like you're playing a frustrating game of Whac-A-Mole with tech problems? You fix one bug, only for another to pop up somewhere else. This is especially relevant when you're ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...