how do you know?
have you ever seen it? touched it? felt it? if everything you see and feel and hear is nothing but chemical reactions, what makes you so sure that a "brain" is real, when you learned about the brain by seeing and hearing teachings about the subject?
solipism is always more hilarious
Well, I have seen, touched, and dissected brains many times and am taking neurobio rn for my major as well as anatomy 2. But everything we all know is taught to us by another person at some point in our lives, so how can we know anything is real, right? I feel like I'm misunderstanding your question