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Ah but the strength of real time 3D is that viewpoints are first class objects and animatible. One of the joys in a lecture or certain movies is to illustrate differences by switching viewpoints. 2D is impoverished there and so perhaps, is the lecturer or storyteller. It is an interesting means of organizing data too. An H-Anim avatar is just geometry with a bound viewpoint, So is a Heads Up Display. len From: Robin Berjon [mailto:robin.berjon@e...] Rick Jelliffe wrote: > I wonder how much of this is hardwired? If we were wired differently, > so that we preferred 3D to 2D, would our lecture theatres have, instead > of the flat whiteboard, mechanical arms with great reach and several > degrees of freedom, so that lecturers can put their 3D teaching artifacts > on them, allowing placment of the objects in 3D around the lecture > theatre? That we don't do that kind of thing suggests not a lack of > imagination or finance, but that it is not the way we usually communicate > (perhaps even if only because the theatricality swamps the communication.) If you think about it, one of the issues of communication with 3D objects is that in order to efficiently communicate about/with them we need to all be looking at them from roughly the same angle. This would likely be an issue in lecture theatres, one only needs to browse the ample documentation on the same issue for thespian theatres (scenography, etc) to get a feel for the complexity of the task. 2D OTOH looks substantially the same from a wide set of angles.
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