text: Another reason is this may help you with communication ,this software can help you communicate. In a false smile the mouth is stretched sideways using zygomatic major and a different muscle,the risorius. To an expert,faces don't lie these muscle cluses are sometimes used to spot when a smiling politican or celebrity isnt't being truthful. This helps weather someone fake smiles to you or not. In a real smile the zygomatic major lift the corners of your mouth. This computer system knows if you are faking it.