The theoretical result of the paper is significant in my opinion. I also agree with the authors that the topic of this paper is at the core of machine learning and thus the paper should be evaluated based on its contributions. The reviewers also adjusted their reviews based on this point. However, I should also mention that the reviewers raised the concern that some of the definitions are omitted and few parts of the paper is not rigorous enough. Therefore, I suggest that the authors take care of such ambiguities in the final version.