a person who confuses you and makes you feel bad about being confused
a person who is good with numbers but lacks the personality to be an accountant
a person who knows lots about economics
a person who talks about something he doesn't understand and makes you feel you are ignorant
a person who, when he finds something that works in practice, wonders if it will work in history
a person who, when he smells flowers, looks around for the coffin
a very smart person who writes a check and then assumes there is money in the account