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Apparently the remarkable events of 2008 were so unlikely some bankers were labelling them as '25 sigma' events.

See e.g. here.

So very, very unlikely, it's astounding they happened at all.

by ThatBritGuy (thatbritguy (at) googlemail.com) on Tue Aug 6th, 2013 at 12:30:14 PM EST
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