<p>I think we must first make a distinction between an “Intellectual” and one who is “Intelligent”. Because they are not the same. </p>
<p>Like others have said, dumb is highly subjective and I don’t see it as being a lack of book smarts of anything academic. That to me, is more so being ignorant than being dumb. A lack of common sense is the area I see one being deemed as dumb in.</p>