Tired people
Maybe being smart is not necessarily the best thing. People Love to say 'work smart', so that one could save time and go relax. But after you relax you get an extra clear mind, you have extra energy to think nonsense. Maybe get a litle less sleep you may feel drowsy in the head, but you get extra time to finish your task. You don't need to rush to finish it fast, you can do it slowly. When you feel drowsy, you do not think nonsense. Just like drinking alcohol, it transfers you to another dimension. It gives you a sense of distance when people talking to you. I mean there's nothing bad about being a little tired. You get lesser burden on your mind and heart. Tired people do not overthink, they just want to sleep.