text: At least according to some new computer software that can recognize emotions. The software is the latest innovation from prof. THOMAS HUANG, of the beckman institute for advanced science at the university of Illinois, working in collaboration with prof. NICU SEBE of the university of amsterdam. Dr. HUANG and his colleague are experts at developing better ways for humans and computers to communicate. The MONA LISA demonstration is really intended to bring a smile to your face, while it showa just how much this computer can do. Imagne a computer that knows when you're happy or sad. For example if you smile when a web ad appears on your screen, a similar ad might follow. But if you frown, the next ad will be different. a classroom computer could recognize when a student is becoming confused or bored.     Dear Mr. Principal