mattgibson/moodle-plagiarism_turnitin — comment on commit 03eeac495d2083a07d235f7a322c9c9259af71bd
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By peterbulmer:

I personally agree with your view that common sense says that the student should expect their submission may be submitted to plagiarism detection, but somewhere along the line someone wanted that warning added for all files that were going to be submitted to plagiarism detection. (I believe that Urkund explicitly specified that the warning should be present in their plugin when they asked Dan to create it for them).

While it's obvious to you & I that if you don't plagiarise, you don't have a problem, the warning being present may make someone (eg Turnitin, or the University) feel like their they're covered against some sort of comeback from the student. Eg claims the uni breached confidentiality, copyright, or security of the document.

To me, the alternative is: If plagiarism detection isn't enabled at the time the student submits the file, it doesn't have plagiarism detection performed against it. While not ideal in some circumstances, I think that this behavior would be transparent to Teachers - especially if you can make it so that files that aren't in queue don't have any icon next to them, items in queue have a 'in progress' icon next to them, and assessed icons have their score next to them.

In short, no strenuous objection from me - as long as you & dan have considered this aspect of it & are both happy.