The harsh reality of life, for the many who tend to be too deep in their thoughts, is that if intellectuals spent more time on their looks (which, when they are good, are per se charismatic and persuasive), their "so good" ideas will have many more chances to appear "so good" to also those hearing and reading those ideas.

Along the same lines, those who are leading the effort in making Science more popular and attract, for example, underrepresented minorities, should focus on making more visible scientists who are good looking, charismatic, and therefore persuasive. It sounds manipulative, especially to the eyes of intellectuals, but it'd work.