Darwin believed that emotions were adapted over time. His researched proved that even people who were blind showed the same type of facial expressions as others, when they were feeling a certain way. Darwin had 3 principles. The first are the habits that are inherited to kids by their parents, habits that we come up with, and the last principle is when we have nervous discharges. He also wanted to prove that humans and animals had similar expressions. I thought this was a really interesting topic. I have always thought of emotions as just being there. I was born and raised in a different country and moving to America I did notice many different forms of communication that people had amongst themselves here. I guess when you are born and raised in the same country you never really notice these cues unless you travel and see others use theirs. Thumbs up: was one of the things that we did not use back in Iran. Showing peace with your hand was another thing I was not really used to seeing. There are many minor things that can be learned really fast when you travel and thinking about it now I don't really remember what things were new to me. They all seem very natural now.