Sorry-- your client's right: the main thing is to make the tenses agree. But you can use either, depending on whether you wish the paper to view a past completed piece of research or wish to use the 'historical/narrative present' to make the text more immediate for the reader. Of course, throughout the paper as a whole, there will be both past tenses and present tenses as appropriate.
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Mister MicawberSorry-- your client's right: the main thing is to make the tenses agree.
AnonymousTo me, that's blatantly wrong, or possibly just lousy style. Am I wrong? If not, help me explain why my method is grammatically correct in the most technical language possible, as I can't do that and it's the only thing my client would respect, I think.I don't have the technical language you require, but my preference would be to put all of those ver