If you don't buy into the acquired, existing knowledge of neuroscience and the role of lymph nodes in learning, you can do whatever you want in your free time, but don't call it my theory, because it's neither mine nor a theory.

For the rest, maybe you're the chosen one, who doesn't need to expend any cognitive load to learn a subject, and just glide on your curiosity. Good for you. There are, to a degree of approximation, zero other people who work this way.