De Facto/De Jure

These terms already distinguish the argument made a while ago in this blog between "law" that is natural and "law" that is man made. The existence of "de jure" (de rigueur also) is the evidence of the nature of society in this blog. The rules which have no "real" basis other than custom and norm. Language and maths fit mostly within the "de jure" conception since how a language or maths is constructed is relative. By contrast the knowledge that a man jumping off a cliff will never lead to him flying is de facto and no matter of relativity of construction can change that fact. As Eddie Izzard says " some things ARE impossible, like eating the Himalayas. It can't be done." and I add no matter how fanciful the logic system, story being told or persuasive the King's orders!