What kind of questions can we expect on this topic ??? Would it be a discusion or comment on the reason ???? The recent article by the exainar explains everything quite well but how would we be expected to utilize this information.
If he asks about it, then he will not ask for calculations. He will be asking for you to discuss the things that were in his article – why it happened, what problems it has caused, and what the possible solutions are, being the main points.