gee that sounds sort of negative, let me rephraseCorrelation of asset classes?The major flaw in the efficient-frontier model is its assumption that it's possible to determine the future correlations between various equity asset classes. I maintain that is simply impossible.this is obvious and it is not an assumption of mpt. By disagreeing with something that is clearly wrong Markman might make someone think that he is smarter than the proponents of mpt- if a person didn't know that he was misrepresenting mpt.sorry if my "opinion" about markman's poor record in the 12 months following his "insights" was in any way offensive
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