from the article...

   the data is compelling

...

   Even their money fount, AdWords, is problematic. An
   illustrative anecdote: I ...did this and that...

...

   While I can’t quantify this, I’m confident that most engineers will agree:

the article claims to argue from data, but presents no actual data: simply anecdotes. c.f., http://www.stat.columbia.edu/~cook/movabletype/archives/2011...