Can you determine whether an argument is valid? Find out here: http://bit.ly/1xKpK2V (Average score is 66% correct - can you do better?)
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@PhilosophyExp I think I took that one a year or so ago. I scored pretty well.
@SubManUSN Probably this time last year, that's when I put it together. Glad you scored well. I didn't! :)
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@PhilosophyExp I'll have to retake it. See if I'm as good as I remember being. Ha.Thanks. Twitter will use this to make your timeline better. UndoUndo
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