We look back with great pleasure to a successful sponsor meeting in The Hague from May 30-June 2, 2023, in The Hague Marriott hotel. This year it was 40 years ago that consortium research started in 1983 at TU Delft under the guidance of Prof. Berkhout. My involvement started in 1986, being a fresh Ph.D. student, and I took over the consortium responsibilities in 2016.