

Food is definitely a weird one. A lot of us were taught advertisement slop (the food pyramid) in science class. And we witnessed the boom and bust of fad ‘diets’ pushed by well-respected yet-to-be-disgraced lunatics. Nowadays both those things merged and live on as the Instagram ‘health and wellness’ influencer industry.
Pretty sure they mean people don’t learn something again when they already learned it. Once you learn how to do something, willingness to learn it again but a different way dries up, and so you stick to bad habits as long as they ‘work’