In this discussion, I will restrict myself to the interface with the ultimate consumer since this is where the market is conclusively established. This means an interactive home terminal for the broadband communications network and is the crucial link for the subscriber to participate in the programming and services offered in the next decade. The synopsis went through a brief general discussion of the topic, and then wound up with the real nut '\educing complex systems to basic parameters leading toward valid predictions of potential cash flow." That is what is needed to make the decision of whether or not to install interactive home terminals and which services to offer if and when these terminals are installed. How should we study the market?