Movement/Motion

My two examples of navigation - Swipe between pages & Launch pad

Swipe between pages:
At the start of the video, we see the Swipe between pages demo.  It is a user interface feature that is made so the user can navigate through out the interface on the Mac. What makes the transition work so well is the instant feed back the user gets visually when he/she moves her fingers across the trackpad. The movement of the users fingers is mirrored accurately enough that the user doesn’t even see the split second delay of when the screen starts to move to the left or right. As the example demonstrates, the user swipes his finger to go towards the direction of the next screen he or she wants to go towards. Even though the screen is hidden, the user knows from their chronological orders that the last thing they did was to the left as displayed on the back forward buttons on web browsers. This motion is meant to replace having to click the back or forward buttons. This feature is not only for navigating web browsers. In any screen/window on the mac, the user can access anything they imagine on the left or right of their current screen by swiping in that direction.
Controlling the movement of a state is something humans always have wanted to do and often fantasize about as seen in this clip. The reason I like the command is it is very intuitive and people try it on objects even though they know it will never happen, just for the sake of imagination as seen in the video on the left. 

It is a genius idea to make a universal motion for accessing another screen in the user interface. The user simply swipes towards wherever they want to go. This rule applies to the second example in the video, Swipe between full-screens. In this example, the user can swipe between their full-screen apps and secondary desktop screens. 

When the screen moves to the next, the one screen slides away revealing the desired screen underneath. Revealing what is underneath is only when the user wants to see something that they went to previously and are going backward. If the user desires to move forward again, the screen slides back on top of the undesired screen covering it up. It moves from the same side of the screen that it entered when the user was trying to go back. 

Launch pad:  
The launch pad is the 6th item in the video. It is a screen for revealing the apps on the computer. This feature is universal among the apps in the Mac universe. On the iPad, the same finger command of pinching 3 fingers with a thumb can be used. Doing this on an iPad brings the user from wherever they are and takes them to the home screen. Since Macs now use app icons, seeing the icons in the launchpad is very similar to seeing the items on the iPad. This makes the command universal because users know that if they ever want to see all of their apps, all they have to do is pinch the screen or trackpad.  The Swipe between pages command can be used to swipe through the different screens full of apps. When you pinch the screen on an iPad, the whole screen of the active app looks like its getting smaller. When that happens, it gets so small it disappears revealing the home screen with all of the apps. The animation of the Mac command is slightly different. On the Mac, It appears as if the user is pulling the apps with their three fingers down from the top of the screen and pulling the active app dashboard up from the bottom of the screen (the active app dashboard pulls up only if hiding is enabled, otherwise it just stays open.)