>Interesting point. 100 years ago “idiot” and “mental retardation” were medical diagnoses. "Mental retardation" was the proper and polite lay term in my lifeti

>Interesting point. 100 years ago “idiot” and “mental retardation” were medical diagnoses. "Mental retardation" was the proper and polite lay term in my lifetime. It was only in 2010 that government agencies started removing the word "retardation" from their names. (See: Rosa's Law)