I've been using Ubuntu for a while now, and I discovered today how to use what's called the natural scroll, which corresponds in fact to the same scroll as in a mac OS.

So in Ubuntu, `unnatural` scrolling is considered as scrolling two fingers to the bottom of your touchpad which moves your scroll to the bottom of the page.  

While Ubuntu `natural` scrolling is considered as scrolling two fingers to the bottom, which scrolls your page to the top.

I understand that this `natural scrolling` is relevant for touchscreen, but can it be considered natural in the case of a touchpad?