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If we assume that there are normal or standard income results to be obtained from investing money in securities, then the role of the adviser can be more readily established. He will use his superior training and experience to protect his clients against mistakes and to make sure that they obtain the results to which their money is entitled.

Benjamin Graham (1959). “The Intelligent Investor: A Book of Practical Counsel”
If we assume that there are normal or standard income results to be obtained from investing money in securities, then the role of the adviser can be more readily established. He will use his superior training and