[coldtea]

>It was very dramatic. For one, it stopped being a physical, clickable trackpad and became a single piece of glass with haptic button pushes. Losing the physical components also gave more room to make it larger and it's gotten bigger since. You also got more multi-touch options. It was pretty big.

All of these are correct but have nothing / little to do with the quality of the main trackpad use experience, which was still great on Macs before it got haptic pushes, larger size, glass, etc.

[dkonofalski]

We'll just have to agree to disagree. The experience was great on Macs before then but it was still a dramatic difference when this change happened because we got additional gestures, much more precise tracking, and a larger surface area with less friction than the previous models.