Last week (May 2026), Walt Lipke and his wife Dianne visited Ghent for just three days. Short in time, but unforgettable in meaning. We have written about Walt many times before. As the founder of Earned Schedule, his work profoundly influenced the OR&S research journey. After reading his landmark 2003 article "Schedule is Different", we started...

The new OR-AS website is now online! Launching it has been a tremendous effort, not just in designing a fresh look or writing new content, but in deciding what to keep, what to update, and what to leave behind. Times change, yet OR-AS has a long history: the company was founded in 2001 as a project management consultancy, while...