So multi-button mice disable keyboard shortcuts. I get it. Wait, no, I don't. I use keyboard shortcuts, and a few months got an 8 button logitech mouse. It's a thing of beauty. Just try a few weeks with expose on your mouse. One of my buttons acts as a double click, coincidentally. Saves me a click everytime I use it, but I guess that saving clicks reduces productivity. Wait, that also does not make sense. I appreciate the elegance of the single button mouse, and on my Mac Classic II the single button mouse is literally perfect. But these days the ergonomics and convenience just aren't there. I don't do a lot of graphics editing, but when you consider the fact that the left click has the exact same functionality as an entire one button mouse, there's just no possibility that it can REDUCE productivity. You can still do all the shortcuts with a multibutton mouse you can with a single button mouse. If a multi-button mouse disabled keyboard shortcuts I wouldn't buy one because keyboard shortcuts make things faster. Just like multibutton mice do. I'm curious to hear your rebuttal.