Ah, what you mean by "is" gets tricky. You might literally interpret this as "is internal monologue a form of thought" and the answer is clearly yes, on sum lo

Ah, what you mean by "is" gets tricky. You might literally interpret this as "is internal monologue a form of thought" and the answer is clearly yes, on sum logical level, it's brain activity. You might literally interpret this as "is internal monologue the ONLY form of thought you have" and the answer seems just as clearly no and the question seems simplistic. But I think people who say that usually mean "is internal monologue the primary-in-some-way form of thought you have" and there the debate gets heated but if you reveal statement, you reveal the confusion is mostly in debating "what's primary in brain activity". But if you think about, lot of debates about human thought is about which part is primary in a fashion we can intuitively feel.