On the subject of Wile E. Coyote, Paul Krugman must surely win the award for best economics metaphor for this effort at explaining why and when crashes occur:
So, according to the story, one of these days there will be a Wile E. Coyote moment for the dollar: the moment when the cartoon character, who has run off a cliff, looks down and realizes that he’s standing on thin air – and plunges. In this case, investors suddenly realize that Stein’s Law applies — “If something cannot go on forever, it will stop” – and they realize they need to get out of dollars, causing the currency to plunge.
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