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I actually have a proper set up chair and desk and never have problems.
Any time I even go near a laptop for a while longer than a quick 10 minutes I already experience discomfort.
So I have some doubts about that, but I do wonder if there is some link.
My guess is, it takes away the biggest advantage that a laptop or tablet or even phone has over a desktop computer. which is: mobility. Edited 2012-08-28 13:55 UTC