A convincing voice doesn't tell us much about a tutor's teaching. What can the learner explain once the conversation stops? That's the question behind a recent study of voice and text tutoring in an online MBA course. Its findings give schools and product teams a reason to separate the experience they want to offer from the educational outcome they're paying for. Voice might earn a place in that experience. It shouldn't get a learning claim simply because students enjoy using it. What the Voice…