The Force Touch Trackpad
This thing is seriously, seriously brilliant and, in my opinion, a subtle but significant step forward in the Mac experience.
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My big insight into the Force Touch trackpad is that you never need to use your thumb for clicking - ever. The reason we used the thumb was because the click was only effective in the lower quarter of the trackpad due to the hinge. As long as your tracking speed is set high enough that you can go from one side of the screen to the other in one movement, you can just use your pointing finger.
If you think about it, this really takes the Mac another step closer to more direct manipulation of objects on screen.
