wierd dream

I had a really wierd dream this weekend. I can’t remember a lot of it but one piece I picked out of it and pondered as I was lying in bed waking up Saturday morning was I was teaching some sort of strange class and an assignment was for the class to bake a cake that has a self-help or useful message. I was of a technology I’m assuming we’ve never heard of anyways but basically it involved sorts of computer chips or nano bots for lack of a better term that are perfectly harmless and would pass through our system but while in our system would send messages “directly” to our system via contact through the nerves in our body. I’m pretty sure that is still science fiction but you heard it here first if anyone is in fact thinking along the same lines as this. However what a useful tool if in fact it could be make and was actually harmless to our body. We could send not hungry signals to ourself for weight loss. We could send entire textbooks down our throat ((literally!)) for classes. Is something like this really possible? I promise I didn’t see it on a movie. A true direct input into the brain. WOW! What do you think??