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, that might be related to the fact that he is mainly concerned with language education for students in classrooms. What do you think of this?
I largely agree with Krashen, but I think that a little more emphasis on vocabulary review and the occasional grammar review can help more than his research seems to suggest. I also think that some correction helps me notice. But in essence, the emphasis has to be on meaningful input, rather than deliberate teaching. Thus LingQ.