septembre 20077 2.Le modèle de Solow Présentation générale Selon David Romer (2001, 13-14) : « The purpose of a model is not to be realistic. After al
{"Image DocumentName": "2. Le mod\u00e8le de Solow Pr\u00e9sentation g\u00e9n\u00e9rale", "Image ImageDescription": "Selon David Romer (2001, 13-14) : \u00ab The purpose of a model is not to be realistic. After all, we already possess a model that is completely realistic\u2014the world itself. The problem with that \u2018model\u2019 is that it is too complicated to understand. \u2026 If a simplifying assumption causes a model to give incorrect answers to the questions it is being used to address, then that lack of realism may be a defect. \u2026 [If not,] then the lack of realism is a virtue: by isolating the effect of interest more clearly, the simplification makes it easier to understand. \u00bb \u00ab Cependant, le but d\u2019un mod\u00e8le n\u2019est pas d\u2019\u00eatre r\u00e9aliste. En effet, nous poss\u00e9dons d\u00e9j\u00e0 un mod\u00e8le compl\u00e8tement r\u00e9aliste : c\u2019est le monde r\u00e9el lui-m\u00eame. Or ce \u2018mod\u00e8le\u2019 est trop compliqu\u00e9 pour \u00eatre compr\u00e9hensible. \u2026 Ce n\u2019est que lorsqu\u2019un postulat simplificateur aboutit \u00e0 un mod\u00e8le qui fournit des r\u00e9ponses incorrectes aux questions auxquelles il est cens\u00e9 r\u00e9pondre que son manque de r\u00e9alisme peut \u00eatre consid\u00e9r\u00e9 comme une imperfection. \u2026 [Sinon] son manque de r\u00e9alisme est alors une vertu. Dans ce cas, le postulat simplificateur permet d\u2019isoler certains effets et d\u2019en faciliter la compr\u00e9hension. \u00bb septembre 2007.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}