How to change scrolling direction in Lion; and why you shouldn't

Trackpad Settings from Lion To change back from Lion's default natural scrolling open Settings -> Trackpad -> Scroll & Zoom and uncheck the natural scrolling checkbox. All done.

Why shouldn't you?

It's annoying right? Why should you have to relearn how scrolling works?

Because it makes no sense in Lion, and I'll bet you anything it'll make less and less sense going forward. This is the new paradigm, learn it now or later.

But why?

In the beginning of Graphic User Interfaces scrolling was done by clicking the scrollbars on the side of an application window.

Scrollbars

Since this wasn't a very efficient way to do it many weird solutions for simpler scrolling popped up here and there. It soon became standard for Mice to have scroll wheels on them. Making the entire representation of scroll bars a bit redundant. They take up a lot of screen real estate just to show you where in a window you are looking at any one time. It's not like you didn't scroll there in the first place right?

A Mouse with a Scroll Wheel

When touch pads started becoming standard, this design thought was transplanted over from mice and scroll bars. Nothing wrong with that, reinventing the wheel isn't always a good thing.

Except when it is.

In this case it made no sense. The mouse and it's scroll wheel use two different controls to achieve two different things. You move the mouse to point. And you scroll the wheel to.. eh.. scroll.

But on a touch pad you use the same control. Your poking the touchpad to move the pointer and then poking the touchpad in the opposite direction to scroll. The only reason this feels "natural" is because we, as the ingrained PC users we are, are so used to scrollbars. We know that what we're scrolling isn't the content but the scrollbar. Which in turn scrolls the content...

See where the design falls apart?

The metaphor is broken. The scrollbar no longer makes sense when you scroll using the pointing device to move the content, instead of the scrollbar.

Alright. That makes sense, but why relearn? Why fix what ain't broken?

In two words: Cognitive load.

Lion's natural scrolling (directly scrolling the content instead of the scroll bar) will become the standard, like it or not, because the average PC user doesn't change default settings and certainly don't understand why scrolling should be inverse to the screen. The cognitive load of thinking about how to scroll will simply become to much as more computers are delivered with touch pads and more of our PCs become touch based (as tablets become more widely spread).

To clarify; on a mouse the scrolling direction won't change. Because the scroll wheel isn't directly linked to the content anyway. But a touch pad is directly linked. Update: For some reason, Apple has changed the scrolling direction on the mouse wheel for non-apple mice. This is weird. Thanks to Dan in the comments for reporting!

It takes a little time to get used to, though less than you might think, but it will be worth it. And you won't have to relearn later on which will get increasingly frustrating.

Not convinced? Check out MG Siegler's excellent pre-lion post The iPad Has Broken My Brain; OS X Lion Will Help Fix It.

New iOS notification system

Notifications on the iPhone and the iPad are broken. They distract us and get us away from our work flow or Angry Birds and if you, like me, get a lot of them they stack most annoyingly. Push notification on an iPhone

So why haven't Apple already solved this? We can't know that for sure, secretive as Apple is. But I'll bet it has something to do with the new iteration of OS X.

Lion In Lion Apple is bringing iOS features back to the Mac. Specifically, for notifications, applications are now encouraged to be full screen. Full screen apps can't use badges or jumping icons in the dock to notify users of what's going on.

Lion has to redesign notifications. And Lion has to make notifications work with full screen apps, exactly the same problem that Apple faces on the iPhone and iPad.

Unified notification system I believe the new notification system will be the same, or very similar, across all Apple platforms. It just makes to much sense not to, all their devices need new notifications and they face the same constraints... Except input. iOS handles touch,  OS X has a mouse/keyboard. Both of them handle gestures however.

Universal Gestures? In the new beta of iOS, 4.3, Apple has released a set of gestures to do multitasking making the feature a lot more powerful and easy to use.

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These gestures don't translate all that well to the iPhone (five fingers on a 3" screen?) but I dare say Apple can solve that. But I also notice there's one gesture missing: down. Right and left swipes change app, swipe up to show active apps, why not swipe down to show a notification app/menu?

Notification app/menu/dock Gathers all notifications, only needs to make a sound or visual cue for new notifications and users can come back to it at will. It would work on all Apple devices and could be accessed by gesture or from the icon.

Sounds pretty Apple-y to me. What are your thoughts?