The Permissive Ruleset Canon
If the rules don’t tell players they can do something, players can’t do it.
1. Continental Casualty Co. v. U.S., 62 S.Ct. 393 (1942):
“Generally speaking a ‘legislative affirmative description’ implies denial of the nondescribed powers.”
2. Christensen v. Harris County, 120 S.Ct. 1655 (2000):
“We accept the proposition that when a statute limits a thing to be done in a particular mode, it includes a negative of any other mode.”