@thaj That's like saying, "Horses are just fine; who needs a car?" For someone in education, that's a strange argument.
Phones have a severe UI problem. You might not think so, because you're used to them, but they can't compare to a well-designed wearable. (In theory, anyway; you could argue that there hasn't been one yet.)
People shouldn't have to stop doing whatever they're doing, just do do anything at all with a networked device. The experience could and should be so much better.