Is Horse the New Mouse?
lopati writes "Europhysics News writes about a new ergonomical mouse called Horse (jpeg) that reduces repetitive stress injuries by allowing 'the three middle fingers to adopt a flexed position to relax the tendons' and including a thumb scrool [sic:] wheel. Just a few simple changes for so much more comfort!"
I can (and do) grip my logitech MX1000 in a way that looks like what they're trying to accomplish... Fingers bent a bit, hand relaxed over the top arch. Its buttons extend quite far along the body of the mouse, it's very comfortable.
vk.
I don't think the split keyboards were meant to "revolutionize" the human interface with computers. They were introduced as a means to reduce stress on wrists.
I love my split keyboard, and the majority of my MS-oriented professional developer friends all use the split keyboard as well. I was having some my wrist fatigue a couple years ago, but it has disappeared since switching to the more ergonomic keyboard. I'm sure they're not good for everyone, but I am extremely grateful that somebody produces them.
Regarding your main point, slightly improved keyboards and mouses are never going to revolutionize anything. For a revolution, an entirely new input device will be needed.