How did the idea of finding cards arise in the football?
The football religion of British professor Ken Aston, who entered the world of refereeing in 1960 and was awarded the referee for the first World Cup match in 1962, actually the match between Chile and Italy, which almost caused a war between the two countries because of what I wrote The Italian press at the time, with the honor of women in Chile, which turned the match into a battle; it required the intervention of the security forces three times to resolve disputes between players on the field.
After that game, Aston was thinking of a trick. The referees were able to control things on the pitch, especially after the riots broke out between the players. One day as he was driving back from work, he saw the traffic lights pointing to the red, which meant stopping, and yellow indicating the warning. Here, Aston realized that simulating the optical signal system would be the best solution; colors break language barriers and make it clear to everyone, be it the player's warning or expulsion. At that moment he decided to introduce those amendments when he was chairman of the FIFA referees committee in 1970