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Veteran

If this is true, that would mean anywhere from 50-70% of people are walking around with absolutely nothing going on in their heads.
Do You Have An Inner Monologue? Let’s Find Out - VALLEY Magazine
Hello there! Did you just hear that in your head? If so, this means you have an internal monologue or “inner voice” — a common phenomenon that “causes you to ‘hear’ yourself talk in your head without actually speaking or forming sounds,” according to Healthline. Psychology professor Russell...

"Psychology professor Russell Hurlburt estimates 30 to 50 percent of people have an inner monologue narrating their thoughts throughout the day. But if you don’t have one, Hurlburt, who teaches at the University of Nevada, Las Vegas, says not to worry."