Comment on Accept Mean Reversion & follow your Asset Allocation by Ramaneesh Gupta Bandari

I don’t agree to your point on 4th para of Different …… follow Diff paths, which says you might not get a single year of 15% but you could get an average of 15% in the 10 years. I doubt that because if you will not get 15 % in any of the past 10 years then how can we get average of 15% ?