text: in bogota columbia, there acr car free day frequently. in the capital city of 7 million people, only busses and taxis were allowed. authorities from other counties came to bogota to see what i was like without cars and were hapy about it.               In the article, it talks about how a computer can caculate everyones emotional expressions. Personally, I believe that it is kind of pointless for a computer to read someones face to tell what type of mood they're in. Easily, another person can look at your face to see what mood you're in.