Grammar improvements: It may be objected that the amount invested in research does not produce equal rewards.
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The, in his book, The, has a very good point, but it is not clear that he is correct. The, in his book, is a very good point, but it is not clear that he is correct.
The, in his book, is a very good point, but it is not clear that he is correct.
The, in his book, is a very good point, but it is not clear that he is correct.
The