It is widely believed that the thumbs up gesture originates from the gladiatorial fights of ancient Rome, in which the destiny of a losing gladiator.
In modern popular culture, it is assumed that "thumbs down" was gladiator should be condemned to death; "thumbs up", that he.
Pollice verso or verso pollice is a Latin phrase, meaning "with a turned thumb", that is used in the context of gladiatorial combat. It refers to the hand gesture or thumb signal used by Ancient Roman crowds to pass judgment on a defeated gladiator. uncertain whether the thumb was turned up, turned down, held horizontally.