In his book, Dr. Simeone discusses the concept of material truth, that the historical relevance of a preserved object derives from its actual physical materials.
The movement offers another sort of material truth, a set of stories big and small about what it is to be a family and to be at the same time alone in time and space.
The characteristic feature of the Nyaya syllogism is its insistence on the example—which suggests that the Nyaya logician wanted to be assured not only of formal validity but also of material truth.
Adversarial cross-examination is widely perceived by the legal profession as serving purposes which have little if anything to with ensuring that the evidence of witnesses conforms to what continental lawyers call "material truth".
What he does is to record the act of self-portraiture – the fact of a painter looking in a mirror and trying to record what he sees – and give it a deliberately awkward material truth.
As dialogues are designed for dealing with validity, some additional ingredient must be introduced into dialogues in order to make them capable of dealing with material truth.
Those are the instances of the excluded middle relevant to the material truth of the formula at stake in the propositional case.
Thus, as Tarski notes, if every expression of a language counted as a logical constant, logical validity would reduce to material truth preservation (or, on later versions of Tarski's definition, to material truth preservation on every nonempty domain) (1983, 419).
Plato talked a lot about the abstract world of forms and used earthly objects as metaphors for extra-material truths.
But material necessary truths—such as that expressed by "yellow is incompatible with blue"—appear to make just as substantive demands upon the world as contingent truths do (Molnar 2000: 74).
In a sense they appear to make even more of a demand since the world must be so endowed that it could not in any circumstances have failed to live up to the expectations of material necessary truths.
