There are probably as many visions of the NII as there are nodes on the Internet. But the two broad models are the Internet model (``many to any'') and the cable TV model (``broadcast to couch potatoes''). A well-written discussion of the ``Internet model'' vision is available in [National Academy of Sciences1994]. One critical issue is the amount of bandwidth provided from the home. The Internet model sees bandwidth as being more-or-less symmetric; the cable TV model sees a much more limited outbound bandwidth: essentially enough for home shopping. As one wit has said about interactive TV networks, ``how much bandwidth do you need to send `I want it' to the Home Shopping Network?''