RE: My take on First impressions

Your story makes me realize that it is dangerous to form an initial impression about a person. First impression may be very strong, but does not always correspond to what a person is actually like. That person was most likely acting like that since he followed the orders of the lecturer, which gave you a false impression. It is nice that you did not hesitate to share your thoughts about the fact that this impression was changed after you became better acquainted with that person.