"the ubiquity of mouse wheels for easy up/down navigation" I have maybe used a mouse once in the last decade (I use a trackpad)...and that mouse didn't have a

"the ubiquity of mouse wheels for easy up/down navigation" I have maybe used a mouse once in the last decade (I use a trackpad)...and that mouse didn't have a mousewheel. And before that I used trackballs for a decade (again, no mousewheel). And before that, my laptop had a nubbin. I recently set up a keyboard with mousekeys (on that computer, I have no mouse-ish-thing at all), and since I saw there was mouse wheel emulation, I attached that to a couple of keys out of curiosity, but I had literally no idea what those would do when pressed in any program since a mouse wheel is completely foreign to me. Not saying you're wrong, just that the assertion of ubiquity struck me as strange.