We would like to thank the reviewers for their valuable feedback, which we will duly consider and integrate in our

In this paper, we demonstrate that "the decision boundaries of a DNN can only exist as long We clarify the main points raised by the reviewers here below. We further shed more light on the relationship between adv. Nevertheless, we never claim that, within the discr. In fact, we agree that the margin associated to different discr. Overall, however, we firmly believe that the invariant dirs.