I don’t think LBJ had a thick head of hair. Gerald Ford was a little sparse, too, but he was never elected. And LBJ got the job through murder, although he was later elected. So the theory about the necessity of hair is valid. The percentage of men over 45 with full heads of hair is pretty low, not sure what it is. At 55 or 60, even lower. So to have all the Presidents with good hair is definitely a sign of something.