This question: Kinetic theory derivation of viscosity of a gas has an accepted answer. That answer, however, does not contain the amount of detail that I want for a specific part of the question. I have (in the recent past) placed a bounty on the question asking for more detail, however no other answers where forthcoming. I am guessing that if I re-asked the part of the question I require, it would rather quickly be closed as a duplicate.
So my questions is this:
Are there any situations where a duplicate is ok, and if so does my above case fall into one of these situations?