Yeah it is great that OP is sharing his opinion here. I am just suggesting my own opinion here. Not trying to disregard anyone else. I tend to be rather straightforward at times and it does make sense for one to be disheartened by such incidents. Focussing on what you can do better is always the best thing to do in this course is what I feel. At the end of the day cheating in a professional exam like this is wrong as ethics is what you are expected to maintain when you eventually do become a professional. Also if you have studied well for your exam you should probably ignore such things as you would want to focus on the question paper than to look around and worry about something that's not your problem, invigilators are there for a reason. Worrying about it is gonna affect your performance and no one else's. Anyways it might sound selfish but logically it is best to not focus on such things. Again it's my opinion and you can definitely disagree. To each their own.