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7 mai 2013 2 07 /05 /mai /2013 20:47

Encore le zombie du PIB... J'y avais fait allusion en citant Roger Pielke Jr. (entre autres) et voici que le même publie un post assez amusant :

"Yesterday saw the release of the Social Progress Index, a new metric of national well-being that seeks to use non-economic criteria to produce its rankings. Michael Green, executive director of the Social Progress Imperative, a Washington, DC group which with academics from Harvard and MIT helped to produce the ranking, explained:

It is becoming increasingly apparent – particularly in light of the world’s global economic downturn – that GDP is simply too one-dimensional to provide a complete measure of a nation’s progress. The ‘Arab Spring’ of 2011 and the last decade in Mexico show that robust economic growth does not automatically translate into wellbeing among the population.

Countries need a new measure – as a complement to, not a replacement for economic growth – that assesses and quantifies factors that really matter to real people: Do I have enough to eat? Do I have shelter? Can I get an education? Do I have a fair chance to get on in life without facing discrimination? Economic measures, whether it is GDP or income inequality, are mere proxies for wellbeing. We need to measure wellbeing directly.

Efforts to replace GDP as a metric of overall well-being have seen many champions. However, almost all of these efforts have added complexity but little, if any, additional value. So it seems to also be the case with the Social Progress Index.

The graph at the top of this post shows the relationship of the new SPI index with national per capita GDP (2011 PPP $US from The World Bank graphed on log scale). As you can see, there is an exceptionally strong relationship between the two metrics. More than 85% of the variance in the SPI can be explained by per capita GDP, suggesting little practical basis for preferring the SPI to a straightforward metric of wealth as a proxy for well-being.

The lesson? You can try to develop an index of well-being that hides wealth. But it is there nonetheless."

 

Pour résumer :

 

On a trouvé "l'Indice du Progrès social" qui devrait être le complément (sans le remplacer !) du PIB. Malheureusement, quand on compare ce nouvel indice avec l'abominable PIB, on trouve ceci :

 

Pielke 

 

Donc, rien de bien intéressant dans ce nouvel indice...

Comme le dit Roger Pielke Jr. :

La conclusion ? "On peut essayer de touver un indice de bien-être qui ne tienne pas compte de la richesse. Mais cette dernière est toujours là, mal gré qu'on en veuille."

 

 

 

 

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