Stephen Krashen's article

Applying the Comprehension Hypothesis: Some Suggestions Stephen Krashen http://www.sdkrashen.com/articles/eta_paper/index.html http://bit.ly/iakY8a

Krashen's article is very interesting. He treats testable hypotheses, and his conclusions are based on data. If there are any drawbacks in his theories, they might be related to the fact that he is mainly concerned with language education for students in classrooms. What do you think of this?