1) It is very important as it has been found to directly relate to educational achievement and later SES. The fact that "polite" society turns a blind eye does

1) It is very important as it has been found to directly relate to educational achievement and later SES. The fact that "polite" society turns a blind eye does not make have less of an impact. 2) Yes, but the comment you were replying to (and made) was not.