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So they say, but they've been saying this for many decades. Clues? Most of these people are selling books, DVD's, programs, etc... I think when it happens it'll be so bad there's no coming back for anyone. So, the best bet is to not allow it in the first place.

Clues for the crash of the economy? Its better if you ask for clues that say than the economy will not collapse... You will not find any...