Pumps still require a fair amount of planning, experience, and knowledge about one's T1D in order to use effectively. The pump can only be reactive: sugar spike

Pumps still require a fair amount of planning, experience, and knowledge about one's T1D in order to use effectively. The pump can only be reactive: sugar spikes, emit insulin. Sugar tanks, sound an alarm. You're supposed to tell it in advance how much sugar you're about to consume in order to keep things level, and they can't anticipate you deciding to exercise.