I found this through Andy Ihnatko (http://ihnatko.com/2013/02/23/three-pipe-problem-alteration-and-invention-raphael-vermeer-and-the-mashup/ http://ihnatko.com/

I found this through Andy Ihnatko (http://ihnatko.com/2013/02/23/three-pipe-problem-alteration-and-invention-raphael-vermeer-and-the-mashup/ http://ihnatko.com/2013/02/23/three-pipe-problem-alteration-...) who ties it in part to the (software) patent problem.