There is a lot of talk about bubbles, and how we need to do something to prevent them. I find this difficult, as even if we could observe bubbles we also really need to justify why we should lean against them � as long as the cost falls on those getting themselves involved in the bubble I�m not sure what the issue is.
However, if we are going to do things I think I�ve identified a pretty obvious bubble:
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The use of the word �sustainable�. Hat tip to Haunting the Library
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