Needing a 3rd hand for a peripheral is naturally a flawed idea. The only
reason I prefer the mouse over the palm trackpad is because it can't interfere
while probably still having to use it occasionally. The track point and
trackball were better interfaces than both but they weren't a great platform
for making Apple look innovative.
the 3rd hand wasn't event what I meant by inefficient, it more that you need an extra surface to move some pointer and do the least possible amount of HCI data transfer. It's so... lame in this age of mobiliy
