text: In fact, we human perform this same impressive calculation everyday. For instance, you can probably tell how a friend is feeling by the look on her face. Of course, most of us would have trouble actually describing each facial trait that conveys happy, worried and so on. Yet Dr huang obsereves that artists such as Da vinvi studied human anatomy to help paint facial muscles precisely enough to convey specific emotions. His new computer software stores similar anaomical information as electronic code.