One of our users, Victor, constantly makes comments implying that it returns of 30% or 40% per year are reasonable using trailing stops and careful picking. Victor is a valuable poster with good reputation and a significant number of great answers and comments.
My question is whether this community views such back-and-forth debates as a good thing or a bad thing. If good, how could the debate be improved? If bad, is there a way we could point questioners to the theories without arguing in the comments?