Inside or Outside?

What does it mean to be an insider or an outsider? As implied by the words contained in the words themselves, an insider is one who is closer to the 'information', as an outsider is further away from it and does not have clear access.
In the poem Richard Cory, the narration seems to be in the point of view of fellow citizens who admire and are somewhat envious of his life. The people passing by everyday seeing him were clearly outsiders, as  "we people on the pavement looked at him, he was a gentleman from the sole to crown...". They admired him from the outside, taking attributes of his personality and life through physical facts and observations. However, someone on the inside would know perhaps much more to him, speaking about his true personality, the way he reacts in situations and his interests and hobbies and other personal traits. In the end of the poem, Richard Cory "put a bullet through his head", possibly implying that he was unhappy with his life. An outsider who was simply observing the way he appeared in public would not have expected the shocking decision Richard made on that summer night, whereas an insider would have been able to understand and perhaps learn about his unhappiness and difficulties. An insider may have been able to consult Richard Cory about his difficulties and how to cope with them without ending is life. An outsider, on the other hand, can only see what their eyes retain and are not able to change the outcome.
In conclusion, an outsider means to be someone who is (at times) unintentionally trapped on the outside of a person or situation, only seeing the directly physical aspects of what is observed. They are not able to go deeper into their understanding for a certain subject, as they are not able to learn more about the topic itself. However, an insider is quite the opposite. An insider is able to search deeper into a person or situation, and as a result can sympathize or even relate with what is happening. They are able and in addition willing to discover more about what surrounds them.