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Peter Klein objašnjava zašto je korišćenje istih od neprocenjivog značaja za nauku i čovečanstvo:

In Paris, unwanted rain suspends one of the greatest French Open finals in history. At my home in Missouri, drought is killing my trees and shrubs. If I were a Keynesian, I'd say the rainfall is just about perfect.

Mislim da se u ovoj stvari monetarista potpuno slaže sa Kejnzijancem.