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Tuesday, December 24, 2013

Thought for the Day

As a number of writers have noted previously, sales of Christmas cards Granger-cause Christmas, but they certainly don't cause Christmas!

Best wishes for the holiday season.


© 2013, David E. Giles
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2 comments:

  1. David SternDecember 24, 2013 at 4:18 PM

    Do sales of Christmas cards help forecast the occurrence of Christmas given information on past occurrences of Christmas? I don't think so! :)

    ReplyDelete
  2. Laurence LesterJanuary 6, 2014 at 1:51 PM

    Measurement without theory?

    ReplyDelete

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