Apple, Please Let Me Disable Natural Scrolling Just For My Mouse
Natural scrolling has advantages, but right now this setting is all or nothing. It makes scrolling work the same way it does on a touch screen. This is a good thing! The problem is that when I sit at my desk, I use an external mouse instead. With natural scrolling enabled, that means the wheel does the opposite of what I expected. Unfortunately, you should probably install a third-party utility to do it....