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Using two mice seems alot harder to me than simply learning to navigate two screens with one mouse [img]/images/graemlins/confused.gif[/img]

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1. I've practiced the technique of using two mice at the same time, one in each hand. I could get used to it, but it's slightly annoying, as I only have one pair of eyes.
2. I can see navigating two screen with one mouse being physically tiring over the long run.