I guess that the one and most important thing, idea that was new to me, that I learned, as a summary of all of the lectures within the Autumn of 2012 and Spring of 2013 is that one should never, ever, present to other people something that is not perceived by them as something that is in line with their current motivations. That holds for both, formal presentations and most cozy, private, talk among friends, UNLESS You care so much for their well-being that You are willing to withstand their, usually politely reserved, fury. (Example case: one might want to speak the truth to one's family members, even if it's not going to be something that they want to hear.)
The definition of anger, according to my memories of my psychotherapist's sayings, is that anger is a reaction that a person has, when someone else does not meet the expectations of that person.
But anything new, novel, definitely violates the expectations of the people, who find it to be new or to be used in a new way. For the sake of conciseness I'm leaving many of the teaching related conclusions to aside, but often teachers/lecturers are saved by the fact that people expect them to present new things and that's not the case in situations, where a kind-hearted person tries to help someone to do something more efficiently/cheaply/faster/etc.
Whether X is novel, new, depends on a context. A lot of things tend to be new to small children and most things presented at University tend to be new to me. The generalization is that the amount of bits that is needed for drawing the raised middle finger is quite small compared to the amount of bits that is needed for the context that is necessary for understanding that the 2D image depicts a hand and that a hand can have multiple gestures and that gestures have different meanings and some meanings tend to be used for expressing a certain type of message, etc. The message actually depends on the "bits" of the context. For instance, if the middle finger is shown as part of some protest expression to some totalitarian regime, then the spectator of the vulgar message might consider the message as welcome, pleasing. The context bits and their number depends on education and life experience, e.g. "wisdom".
To be continued, whenever I feel like it.
Thank You for reading. :-)