Most of us have got his wrong. 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 was decided by the crowd. Thumbs up, he lived, thumbs down -he died. If this is what you believe – then you would be wrong, and here’s why.
Thumbs down, signified “swords down,” which meant the losing gladiator was worth more to them alive and was to be spared to fight another day.
Common error.
Thanks for the information.