^With a proper acceleration curve people can easily use a mouse or trackpad over a few inches of real space to map a computer screen at pixel-scale accuracy. Usability-wise moving your forearm from your hip over no more than say 60 degrees per axis is much less tiring than having to move your hands all over a huge virtual vertical plane.
But of course only time will tell, though I'd have thought that a shooter or RTS would have appeared among Natal tech demos if pointing implementations were trivial.







