Krashen has shown that we learn languages unconsciously and Curtain should not be playing with that. Nobody should be playing with that. She is wrong to promote such a twisting of his words. It’s insulting to his work. It distorts*.
The application of Krashen’s ideas in TPRS by Blaine Ray require that the entire process of instruction focus the mind of the learner fully on the meaning of what is being read or said and not on the actual language itself. This point cannot be repeated enough. Only language teachers who really get this fact will have true success with all of their students.
Any breach of that unconscious focus on meaning only causes the acquisition car, now fueled by sugar, to fall apart, and when that happens the class is immediately hijacked by those few kids in the room who can think about the language, who can become editors, and who can get command of the mechanical aspects of the language, things like grammar and verb conjugations, to the great detriment of the rest of the kids in the room, who can only learn the language if it is presented to them in the way that Krashen and Ray have developed.
*When this topic was up in the summer of 2010 Krashen said to me on the beach in Los Alomitos in a plaintive tone “What don’t they get about it being unconscious?” I didn’t have an answer.