Exactly. What do we mean? Is this a stupid question, or is it really insightful?
![](/sites/default/files/styles/square_thumbnail_180x180_/public/itjournal/fulltext/2013/07/itj1307b/itj1307bfig01.gif?itok=rd5bvEer)
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Exactly. What do we mean? Is this a stupid question, or is it really insightful?