i'm completely aware that the MBP and macbook trackpads are completely different since the MBP now has a HARDWARE change, giving it "multi-touch" thus allowing advanced two finger/three finger gestures. I'm wondering, however, why it wouldnt be possible for apple to upgrade the macbook trackpad with at least a couple of new gestures. I know the technology on the macbook trackpad wouldnt be able to do things such as pinching/rotating. but since the macbook trackpad can clearly distinguish between one and two contact points moving in a linear motion, why couldnt apple upgrade the trackpad to allow something like a two finger swipe for moving forward and backward between webpages. (up/down for scrolling, left/right for paging) The three finger swipe found in the multi-touch trackpad is really the only gesture i would use, so a two finger swipe, rather than a three finger swipe would solve this problem. so, in short: in theory shouldnt it be possible for apple to allow the macbook trackpad to perform a few more basic two finger, linear gestures without a hardware upgrade?