I have an older relative who is very educated, intelligent, cultured and worldly (as are her parents). She's also very successful - has a degree from USC and makes six figures. There isn't any subject we can't have a substantial conversation about - art, literature, history, science, medicine, you name it. But oh boy, she can't spell, and pronounces some words completely incorrectly. She doesn't have any learning disabilities, either. This totally blows my mind.