I found this talk interesting. It is encouraging that other designers believe that they can change the attitudes of people. The screen showing the emotional change between the elder man and the middle age/young man would surely affect people over time. Designing to create an emotional change seems like a good thing to do as this emotional change/ attitude can improve how we live or engage with each other as humans. It has to be something interactive or just clever because people now are less willing to change unless there’s something in it for them.