It seems misleading to begin the topic by asking for a quick definition of empathy because it is a "simple task" only to follow, after the long pause of white space, with the "gotcha" that there is no simple definition. Would I toss my daughter the car keys, even though she is too young to drive, and tell her, "It's easy to drive. Come on! Hurry up!" and then after she gets in a car accident tell her "It ain't so easy is it? Psychological theories aren't exactly the same as the 2nd Law of Thermodynamics. I think it is necessary for Stef to use a broader term for empathy rather than always having to clarify what number of the possible definitions he is using. The post was done well and I did learn something new about the different terms for empathy, but, I think most people know the subjective nature of emotions.