精选优质文档-倾情为你奉上Unit6Good morning, everyone. The theme of my speech today is less is more,(PPT1) and next ,I will discuss a question.Why the fewer choices,the more happiness? Then this view is demonstrated through two angles, economic perspective and probabilistic perspective. (PPT2)The first part, the economic perspective. (PPT3)From the perspective of economic opportunity cost, the more choices, the higher the opportunity cost. It includes time, energy, money and so on.(PPT4)Under
