“What is the most important question you could ask about a model?” asks Steer Davies Gleave’s John Swanson rhetorically. “How about ‘Does it work?’ Or, more tactfully, ‘Is it fit for purpose?’
“The recent furore about regional models suggests that it is surprisingly difficult to decide even what the right question is, never mind how to answer it,” he says. “While modellers argued about whether their models were strategic or not,...
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