Why happiness is difficult to define: Wikipedia’s answer is the result of 6,000 edits by over 3,000 users — Quartz by Greg Jones | life https://qz.com/912028/why-happiness-is-difficult-to-define-wikipedias-answer-is-the-result-of-6000-edits-by-over-3000-users/?utm_source=happyDB170517&utm_medium=email&utm_campaign=happyviews