Title Text:Spacetime Soccer, known outside the United States as ‘4D Football’ is a now-defunct sport. Infamous for referee decisions hinging on inconsistent definitions of simultaneity, it is also known for the disappearance of many top players during… [more]
Origin:https://xkcd.com/2705/
https://www.explainxkcd.com/wiki/index.php/2705:_Spacetime_Soccer
时空足球
