marsilni

I can only say :Read the assigned reading:
If you feel the CFAI books are so wrong - why are you in the program at all?
For example - first question - an oft repeated theme is international investing reduces risk because of diversification benefits, which happen because there is low correlation amongst international investments.
Also there is the potential higher return possible. Increase of return increases numerator of the sharpe ratio, while Reduction of risk due to diversification reduces denominator == combination is a increase in the sharpe ratio.