Wolenski, Jan
(2016)
Some Liarlike paradoxes.
In: UNSPECIFIED.
Abstract
Abstract. The classical Liar paradox is as follows
We can construct several Liarlike paradoxes, for instance of meaninglesness:
(a) An additional principles: A is meaningful A is meaningful; A is meaningful if and only if A is true or false;
(b) (1) (1) is not meaningful;
(c) (1) is true (1) is not meaningful;
(d) Assume that (1) is true; hence (1) is not meaningful; but (1) is
meaningful as true;
(e) Assume that (1) is false; hence (1) is meaningful, but (1) jest meaningful and true; hence (1) (1) is meaningful; hence (1) (1) is not meaningful; hence we return to the former case;
Analogical paradoxes can be formulated for (un)rationality, (un)testability, etc. A general lesson: If a principle P establishes meaning of a predicate W referring to properties of sentences such that Tscheme is applicable, we can expect that the predicate in question can generate a Liarlike paradox. However, it does not mean that philosopher must resign from P. Generalizing the truth case P is formulated in ML and apply to items formulated in L. The only moral is that the criteria from L have to be supplemented by something else.
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