What I really want to know is how they're going to try to logically defend putting more shit in your head. I hope it's intriguing, but I have a feeling it might be hand-waved aside. We'll have to see.
You're probably just absorbing the tadpole's life essence or something, there's no way you're going to stick 15 tadpoles in your brain, it makes no sense thematically, logically or physically xD