... no opinion-driven, ego-driven, or authority-driven
in ~2000
http://en.wikipedia.org/wiki/A/B_testing#History
= Split Test
= Bucket Test
So, do we need A/B Testing?
http://www.google.com/analytics/
http://blogs.msdn.com/b/tomholl/archive/2014/11/10/a-b-testing-with-azure-websites.aspx