Meta: Why is this tagged 2014? The article was only published yesterday. (August 26 2015) It does reference a 2014 talk in the first paragraph, but the interes

Meta: Why is this tagged 2014? The article was only published yesterday. (August 26 2015) It does reference a 2014 talk in the first paragraph, but the interesting parts about recovering from the wrong abstraction are all new (2015) content.