text: In conclusion, there are many advantages to limiting car usage including it is better for the environment, it is becoming less nessasary, and it is also becoming less popular.    Why should we have to use technology to tell peoples emotions. In the case of Mona Lisa i can see why they would use it there. It states that she`s 83 percent happy, 9 percent disgusted, 6 percent fearful, and 2 percent angry. I wouldn`t have known that if not for tech. Why should we calculate emotions. We shouldn`t have to use 3-D computor model to tell the emotions of people. All we have to do is look in a mirror. Raise your lips at the corners of your mouth. Then squint your eyes slightly, to produce wrinkling (crows feet) at the corners of your eyes. Holding that, raise the outer parts of your cheeks up, towards your eyes. Using technology produces a fake smile. We want real smiles. Besides your home PC can`t handle the complex algorithms used to decode a smile. But we can write down some simple instuctions that encode different emotions. So all i just said is basicly saying i don`t want this to be used. Firs of all I'd like to state that there has been no scientific proof of life on Mars yet. Im sure if there was life on Mars NASA would have made a big deal about it already. If you look closely enough at the rock in the picture you'll see that it is just a rock. It could of been a lucky rock formation that looks like a face. Just because it does look like a face doesn't mean it has to be from aliens. We have many cool looking rock formations here on earth. Does that mean their made from aliens too? If this particular rock was created by aliens wouldn't the other close to it be made by them too? However the rocks right next to it are just rocks and nobody makes a big deal about them.