[vanderZwan]

I guess you're talking about the point where it's more collaboration on a half-solved problem than data transfer about solidified knowledge? Because then I agree, but that's a really different type of knowledge transfer we're talking about then.

[rocqua]

There's a point before collaboration, where you ask a researcher to bring a student up to the level of the researcher. At that point, the student and researcher struggle with similar enough problems that the researcher can think from the students perspective.