AT&T can't be the only operator guilty of such throttling. A previous article was published about Verizon also considering implementing throttling data consumption.
Apple's position in the mobile device market will only benefit long-term by offering this capability across operators, especially at the international level.
Powerful indeed. Imagine a lot of such "math demos" --- one for each equation/principle/concept in math. Instead of just the plot of a graph, you have a "toy" that you can play with.
I never knew about <input type="range" ... but will be sure to play with it.
Creating one will allow others to join.