Last week we received the sad news about the passing of our Dutch gaming colleague, professor emeritus Léon de Caluwé (1950-2019).

A long-time member of ISAGA, Léon was pivotal in introducing gaming and simulation into the practice of Organizational Development and Change. Working with Richard Duke, Jac Geurts and several young consultants of Twynstra Gudde, Leon built an impressive portfolio of games for large organisations, both public and private. To him, tailor-made gaming was the only effective process when a cultural transformation of every member of the organization was required. Léon tested this conceptualisation of gaming & simulation in several empirical studies. His extensive evaluation of a gaming project at Delta Lloyd (more than 100 teams, five pre- and post-tests) led to the famous publications under the label “Change has to be learned”.

Léon de Caluwé combined his career in consulting with a professorship at the Free University of Amsterdam. He was a great teacher, speaker, coach. He helped many professionals to write their PhD’s. More that hundred publications witness his vast talents and energy.

His gaming friends will remember Léon as a loyal, friendly, helpful, sociable, humorous and wise person. He will be dearly missed.

Sebastiaan Meyer

Further information: http://www.decaluwe.nl/  ( also in English)


The ISAGA community is deeply saddened by the news of Allen Feldt’s passing.  Allen Feldt was, together with Dick Duke, founder of ISAGA and organizer of the 1st conference.

Our sincere condolences go out to Allen’s family and loved ones.


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