[majormajor]

Industrial mass-produced "assessment" is only necessary in a mostly-anonymous, un-personal system. If you have time to actually talk to a student, you can figure out pretty quickly how well they understand something.

I think of it like stack overflow. If someone borrows ideas and code from there for a code review, I'm fine with that, as long as they understand how the system is doing. Being able to do research and find information is a useful skill! But only if it's applied correctly, with understanding. So I'm going to probe on that. And it might be blindingly obvious to me that they didn't understand what they were doing, or why the pasted code isn't appropriate. And I don't need a "stack overflow detector" to see that.

[ses1984]

Yes, if we had unlimited resources and could give each student an individualized exam, oral and written under supervision, then plagiarism detection of tech wouldn't be necessary, but if you're trying to stretch a budget...