jerzy.karczmarczuk@info.unicaen.fr wrote:
Your example with the King on the chessboard goes along the doctrine professed by Achim S., "forbidding" something. But this word, "legality", etc. is a juridic term, something not so meaningful in math. OK, you are forbidden to try 0/0. But you DO. So what? You claim that math doesn't say "undefined", mathematicians do, etc. Now, does MATH say "Hey! there is no sense in what you are doing!"? But math as an abstract domain, does it have "built-in" the notion of sense neither. You say: "you are out of system/sense". I say "you get no answer". I believe that my standpoint is more operational.
I believe it's basically the same point. Legal, btw, is meant along the lines of "it is not allowed for an apple to reinterpret gravity and fly into earth's orbit". Natural, not human-made law. -- (c) this sig last receiving data processing entity. Inspect headers for past copyright information. All rights reserved. Unauthorised copying, hiring, renting, public performance and/or broadcasting of this signature prohibited.