I am not attacking your values, Husar, I'm attacking the values of society as a whole. If you don't consider someone someone who can't do math stupid, then good. The fact remains that I have several students who feel like complete failures and idiots because they just can't wrap their minds around statistics. The number of people who feel that way because they have trouble writing is drastically lower. This is due to the term dyslexia and how society has accepted that inability.

Dyslexia doesn't have a cause. "Dyslexia" is the term we give for those who have specific difficulties with writing. There are several reasons why people have such problems, from a number of causes, both biological and enviromental.

And the sentence you bolded doesn't say "the same thing twice". The order of things is switched in the second half.