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A comment on You May Be Better Off Picking Stocks at Random, Study Finds. Parent comment

Re:You May Be Better Off Picking Stocks at Random, Study Finds by jakelazaroff on Saturday August 17, 2019 @05:00PM (#20726346)
This still doesn't make sense to me. If the return of inverse strategy S' were greater the loss of strategy S, couldn't you then guarantee a positive return by using both strategies simultaneously?
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