Friday, July 03, 2020

Regarding those models …

… Is the COVID-19 Pandemic Self-Flattening, or Will It Grind Relentlessly on? – Reason.com. (hat tip, Dave Lull.)

Last week, a global team of researchers issued a compelling manifesto in Nature outlining five ways to ensure that models serve society. Modelers, they argue, must take care to frankly assess the uncertainties and sensitivity of their models; avoid obfuscatory complexity; make clear the normative values chosen by the models' developers; avoid spurious precision, and acknowledge their ignorance. "Mathematical models are a great way to explore questions. They are also a dangerous way to assert answers," write the authors. "Asking models for certainty or consensus is more a sign of the difficulties in making controversial decisions than it is a solution, and can invite ritualistic use of quantification."


Here is the piece from Nature: Five ways to ensure that models serve society: a manifesto.

Mathematical models produce highly uncertain numbers that predict future infections, hospitalizations and deaths under various scenarios. Rather than using models to inform their understanding, political rivals often brandish them to support predetermined agendas. To make sure predictions do not become adjuncts to a political cause, modellers, decision makers and citizens need to establish new social norms. Modellers must not be permitted to project more certainty than their models deserve; and politicians must not be allowed to offload accountability to models of their choosing2,3.

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