New Emotion

I have been thinking about something interestng lately. There are people in the world who are literally incapable of feeling the full range of emotions that other people feel. From what I understand, there are numerous ways that that this can occur. This led me to think about somthing different. Are there people in the world who can feel emotions beyond what other people can feel? If not, is it possible that people would develop new emotions that are not present in the future?

If people who have emotions in addition to what most other people have exist, how would we ever become aware of it? Could a person who didn't have the newly developed emotion(s) fathom that someone had an emotion that they didn't? Would the person who was capable of experiencing the new emotion ever have any sense of being different from everyone else? Also, it would be interesting to see how it is determined that a new emotion exists. Would a someone be able to look directly at the person with the additional emotion(s) and determine that that person had more emotion(s) than a normal person? Or is it possible that it would be determined by deduction: By looking at behavior and reasoning backward to the fact that some new emotion must have caused it. I need to move soon: With nothing to do my mind wonders to such topics...