JR_RJ saidI wonder if we'll ever be able to study in our dreams? That'd be so amazing!
In a sense, yes, you have that capacity already. While you may not have sensory input while dreaming from either your body nor outside your body, so I'm not going to tell you that you'll be thumbing through pages of your textbooks, you certainly can work out equations, problems, et al, completely consciously (perhaps even moreso than you are used to when your body is awake) while your body sleeps.
You can even split your attention span, not unlike a prism splitting light, only instead of separating into colors your attention span remains intact, simultaneously on each activity not unlike a house of mirrors. So at one time you can consider the activities of the previous day, while you create and participate in another dream, while you review what you remember for an exam, while you compose a symphony, while you plan your next day, etc. etc. etc., all at one time & consciously while your body sleeps.
Such is the nature of humanity.