BLACK LIGHT PARTY

ok so i know some of you were at my house on saterday night when i had, well, a few people over. but i dont know if you saw what i saw. when we are at school there are clearly clics or groups of people that seem very closed off. i no in my experiance that there are some people who dont even acknowledg me in school, but once they were at my house and there was music going it no longer matterd what group you were from. evey one mixed into a very larg group. ya there was a little bit of a group here or there but it never lasted they would spread back into the bigger crowed. it didnt matter any more who you were freinds with or who you knew every one in the basement became friends. i had a friend of mine say "ya i dont think i have ever talked to beth, but she came up to me grabbed both of my shoulders said it was nice to see me again and then gave me a big hug" she went on to say thay they talked like they were old friends. so it seems that everyone was willing to leave there comfert zone and meet new people. what i got out of this is that the environment in which we interact with others can drasticly change how we view or react to people. the people i saw at my house i have seen at school for going on 4 years now, but i only met some of them at my house. these people and i may have never met if the environment and circumstances had not changed. why do you think this is, that people act so different deppending on where they are? what makes people change so much from in school to out of school?