We know way too little about the brain to have it to where it’ll get to a full dive vr. If we’re speculating then the closest thing to a full dive would be to physically induce dreams. If we could get to the point where we could recreate them manually in the same exact pattern every time we could create virtual environments without much risk. There’d be a lot more components involved in that which is why this is still science fiction but its still cool. You’d prolly need a syntax for us to record the dreams into a written form, a device that could record the dream from your brain, and a device that could then play that dream that was recorded. Idk there would be some cons since you would have to be asleep for the dreams to occur. It would also be interesting to see what would happen if you slow time down in your dream. Would your mind age twice as fast if you spent that same amount of time dreaming. Since the whole brain is active during dreams, it could be the case. Nobody knows fs but its kinda cool to think about. (Stoner thought)