Sorry,my English is poor... Half a years ago I joined a programming competition,which will lash for one year.My idea is that I could develop an App with AllJoyn,which enables people to watch videos/listen music at the same time.People can share videos/music they are watching/listening.I thought it was a cool idea. But we have an intermediate inspection,which will rank our projects.At that time teachers said my idea is poor,that App is useless,nobody will use it.They thought that people would not share medias just within a short distance.But the AllJoyn requires the devices must join the same WiFi.So my project just ranks D,the worst one. I have spend two months on it.I am disappointed.Is my idea really poor? If not,how could I persuade teachers to think my App is of great use? Thanks.