> This looks really nice, but what is the advantage of a dedicated graphing calculator in a world full of smart phones? Specialized UIs and a physical keyboard

> This looks really nice, but what is the advantage of a dedicated graphing calculator in a world full of smart phones? Specialized UIs and a physical keyboard means a user who has mastered a graphing calculator along with its associated CAS, can be far more efficient than someone poking on a virtual touch screen. TI-89, as maligned as it is, has a UI that is designed to do one thing, and one thing only, a lot of math, as fast as its little CPU can chug through. Presumably this calculator is the same. That said, there documentation is seriously underwhelming, with many (most) pages being a brief summary and nothing else.