Discover and read the best of Twitter Threads about #proportion

Most recents (2)

Des messages sur Twitter se gaussent de l'idée qu'un État puisse dépenser plus sans forcément s'endetter, ou augmenter le taux d'imposition. C'est pourtant possible par le mécanisme du #multiplicateur keynésien. Essayons de voir cela, en simplifiant bien sur. #Thread
Le principe du multiplicateur a été posé par Richard Kahn, à partir d'intuitions de Nicholas Johannsen, et cela à convaincu #Keynes de corriger son Traité de la monnaie (1931) pour écrire la #Théorie Générale (1936). 2/23 Image
Ce principe #macroéconomique est aujourd'hui utilisé en pratique et admis dans tous les modèles des grandes institutions (FMI, Banque Mondiale, banques centrales, gouvernements…), mais cette pratique se fait avec réticence, en raison de ses implications théoriques. 3/23
Read 25 tweets
A THREAD on heat.
A personal view on how cities should react on #ClimateChange and #heatisland effect.
#Proportion
Most important is proportion. The hotter the climate the narrower the streets are. There are reasons why streets around the mediterranean are narrower than they are typically in germany.
There is an unlucky proportion where the buildings are not narrow enough to provide shade but too close together to let the heat radiate away at night. It depends on orientation, latitude, weather at night. Not easy. Historical streets have mostly good proportions by trial.
Read 20 tweets

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