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I agree with everybody who says that academic pursuit does not necessarily mean financial benifits. But it certainly does not mean that one has to solely go in either direction. A Phd student should also learn the tricks and trades of the industry and become street smart. He should learn to use his knowledge to make profit and at the same time contribute something to the society. I know this is all idealistic, but then - nobody is gonna pay you just on the basis of your dissertation...it means nothing to him. A dissertation will probably mean more to you and possibly your advisor and few other people who actually understood what you wrote. Earning money and gaining education can never be intertwined with each other.