Yes, over smaller time windows, some of the strategies showed better performance than a random investment, but over the long run those differences mostly went away.
As a consequence, the authors suggest that one way that markets could be stabilized in the long run would be for central banks to adopt random investment stategies to reduce volatility.
So Mr. Romney is to blame because of decisions he didn't make at a business he didn't run that may or may not have set in train a series of random unconnected events many years apart that included Ilyona Soptic's illness.
The Monte Carlo gamblers invented all sorts of reasons to explain the long run of black, failing to appreciate that each appearance of black was a random occurrence.