One of the nice things about working at a big company is that when things break, you're usually not the one that has to fix them. So when one of the buttons on my mouse stopped working recently, I went down to Brian's office to see if he had any new optical mice lying around.
Brian handed me a new one, in a shiny green plastic package with "2x" emblazoned prominently on the front. Can one mouse really be two times as fast as another? Is there a de facto "1x" mouse speed? What if it went too fast?
One is left wondering if someone in the marketing department decided that they could get people to upgrade to a faster mouse. I've never had anyone I know complain about a mouse being too slow.