I had an interesting conversation with a friend this evening about the hypothetical future where people will be able to communicate with each other by creating and manipulating virtual objects that float in the air between them.
One question that immediately came up in the discussion is how transparent such interfaces will be. If you and I are having such a cyber-enhanced face to face conversation, and you are looking at a menu of possible things to create or manipulate, will I be able to see your choices?
At one extreme, each participant would have a perfectly private dashboard, invisible to the other person. At the other extreme, all such choices would be visible to all parties, and would become, in effect, part of the conversation.
Each of these two approaches has its advantages and its disadvantages. I wonder which one will become more of a norm than the other.