In the field of Psychology, “dichotomous thinking” is not considered to be a particularly highly evolved way of viewing the world. Black or white. Yes or no. You either “have” depression or you don’t. You are majority culture or you are “diverse.” You are “straight” or you are “gay”. “You’re either ‘fer us, or ‘agin’ us.” Thumbs Up or Thumbs Down. Yea or Nay. Sox or Yanks. Scarlet and Gray or Blue and Gold, Slaves or Not, Christian or Hellbound, Islam or Infidel, Democrat or Republican. Pro or Con. Right or Wrong. Psychologists make a fair amount of their jing turning dichotomies into continua.
That changes everything.