As you write, it is important to bear in mind that the work you submit is wholly yours. Borrowing ideas and/or phrasing without attribution constitutes plagiarism.
Regarding using AI for your writing, I encourage you to limit its use to exploration, not content generation. Any unattributed copying and pasting (or rearranging, ‘patchwriting’) of AI generated content also constitutes plagiarism. Having AI rewrite your work in the sense of proofreading also constitutes plagiarism.
One way to check if you’re using AI ethically is to ask yourself the question: would it be alright for a human to have done this work for me?
When I suspect AI has been used in a dishonest way, I run the text through an AI plagiarism checker; AI is very good at spotting patterns, including of AI generated text, so it is fairly straightforward to get a sense of this - here are the results from one such plagiarism checker:
From here, there are two paths a student can take:
1. You rewrite the plagiarised parts of the thesis, using your own language or
2. We meet in person or online and I assign a 500-word writing task which you will do in a controlled fashion, without access to AI, and then we compare the language in both cases.
It is very important that what you submit has been ethically written, and is, above all, your own, not someone/something else's.
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