Renewing my membership in the System Dynamics Society

By Len Malczynski, VP Meetings Greetings,In 2009, at the International Conference of the System Dynamics Society, President Erling Moxnes started his Presidential address by saying, '"Groucho Marx said “I refuse to be a member of any club that would have me as member."' Erling got my attention with that paradox and his use of a … Continue reading Renewing my membership in the System Dynamics Society

Why we do not always simulate

By Vincent de Gooyert, Inge Bleijenbergh, Hubert Korzilius, Brigit Fokkinga, Monic Lansu, Stephan Raaijmakers, Etiënne Rouwette, Merel van der Wal With great interest we have been following and participating in discussions on what ‘good’ and ‘appropriate’ system dynamics modeling is. The system dynamics society, including its conferences and the wiSDom blog provide a stimulating environment … Continue reading Why we do not always simulate

What scientific rigor can and cannot buy us

By Jack Homer, VP of Professional Practice Many words have been written about how SD modeling should be scientific and rigorous.  An initial dynamic hypothesis will always have shortcomings, and these can be revealed by model testing.  We must go through an iterative process, revising a model repeatedly so that we can get the dynamic … Continue reading What scientific rigor can and cannot buy us