主题：哈佛大学调查半数毕业生起薪逾7万，保守派只剩9% -- 脊梁硬

Portmanteu of "liberal" and "retard". Someone who, intoxicated by being knowlegable and right about politics and economics, forgets that they need to get actual real ordinary people to support them if their agenda is to be advanced. Often but not always rich, well meaning and with good insight to society's problems, but naive about the mechanics of politics and utterly ignorant about how power actually works.