https://about.marcuspoon.eu.org/tags/problem-solving/Recent content in Problem-Solving on Marcus Poon | Quality Professionalhttps://about.marcuspoon.eu.org/images/social-share.svghttps://about.marcuspoon.eu.org/images/social-share.svgHugoen-usThu, 14 May 2026 01:05:00 +0800https://about.marcuspoon.eu.org/about-work/challenger-o-ring-quality-lesson/Thu, 14 May 2026 01:05:00 +0800https://about.marcuspoon.eu.org/about-work/challenger-o-ring-quality-lesson/The Challenger disaster was caused by a faulty O-ring seal costing less than one dollar. This article explores four critical quality management lessons from one of history's most expensive quality failures.