<u>Intellectualization is a copying mechanism during which a person focuses on practical and rational reasoning is used in order to avoid emotional stress.</u> During a reasoning person is blocking emotional stresses and feelings that might hurt.
In the example in the question, we would use the energy to see how rationally to cope with the situation, trying to ignore the pain we feel because of sudden departure, and possible stab, by the friend who left us in the bad situation and without any previous notice.
Collection supports the water cycle in many ways. For example, without collection, we most likely would not have many oceans/rivers/bodies of water. The water that forms in the collection state are a critical part of the water cycle.
I believe the answer is: Interaction between people
Simmel focused his life on researchers to study different type of social interaction that people do with one another. He consider things such as psychology, economics, culture, and sociology as crucial factors that motivate people to interact with one another.